crk.cz Website Information
Daily Unique Visits: 1,238
Daily Page Views: 2,476
Income Per Day: $8
Estimated Value: $1,920
crk.cz is registered under .CZ top-level domain. Please check other sites in .CZ zone.
No name server records were found.
and is probably hosted by Web4U s.r.o.. See the full list of other websites hosted by Web4U s.r.o..
The highest website crk.cz position in Alexa rank database was 42991 and the lowest rank position was 999474. Current position of crk.cz in Alexa rank database is 579421.
Desktop speed score of crk.cz (79/100) is better than the results of 67.91% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of crk.cz (59/100) is better than the results of 2.69% of other sites and means that the page is not mobile-friendly.
Mobile speed score of crk.cz (66/100) is better than the results of 68.49% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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crk.cz Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
crk.cz whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
% (c) 2006-2021 CZ.NIC, z.s.p.o.
%
% Intended use of supplied data and information
%
% Data contained in the domain name register, as well as information
% supplied through public information services of CZ.NIC association,
% are appointed only for purposes connected with Internet network
% administration and operation, or for the purpose of legal or other
% similar proceedings, in process as regards a matter connected
% particularly with holding and using a concrete domain name.
%
% Full text available at:
% http://www.nic.cz/page/306/intended-use-of-supplied-data-and-information/
%
% See also a search service at http://www.nic.cz/whois/
%
%
% Whoisd Server Version: 3.12.2
% Timestamp: Mon Oct 16 13:28:35 2023
domain: crk.cz
registrant: CESKY-RADIOKLUB
admin-c: GUN389-20001206P
nsset: WEB4U
keyset: WEB4U
registrar: REG-WEB4U
registered: 06.12.2000 16:43:00
changed: 01.12.2014 08:27:01
expire: 08.12.2023
contact: CESKY-RADIOKLUB
org: CESKY RADIOKLUB
name: CESKY RADIOKLUB
address: U Pergamenky 3
address: Praha 7
address: 17000
address: CZ
registrar: REG-MOJEID
created: 01.12.2014 08:22:21
contact: GUN389-20001206P
org: Český radioklub
name: Josef Zabavík
address: U Pergamenky 3
address: Praha 7
address: 17000
address: CZ
registrar: REG-WEB4U
created: 10.08.2001 22:13:00
changed: 15.05.2018 21:32:00
nsset: WEB4U
nserver: ns2.web4u.cz (85.207.53.12, 2a02:a40:100:28ff::12)
nserver: ns.web4u.cz (185.14.224.241, 2001:1568:fd::241)
tech-c: WEB4U
registrar: REG-WEB4U
created: 03.10.2007 14:53:59
changed: 24.04.2023 10:14:55
contact: WEB4U
org: Web4U s.r.o.
name: František Princ
address: Korunní 2569/108
address: Vinohrady
address: Praha 10
address: 10100
address: CZ
registrar: REG-WEB4U
created: 03.10.2007 14:48:14
changed: 24.04.2023 10:14:55
keyset: WEB4U
dnskey: 257 3 14 n/2fsBmhKHkGDjP5cOlbmUPB5DfVSDzAean7RjBjf8DbGV7Nx5f5Ao2sec7u7NrO2iLiSfH7bmBYs9U8fqkPiHwnj2jBI97K4/EYwfGR7LIuiCovoXo7igqu61iBP5QX
tech-c: WEB4U
registrar: REG-WEB4U
created: 23.09.2009 14:06:52
changed: 25.07.2023 11:36:15
%
% Intended use of supplied data and information
%
% Data contained in the domain name register, as well as information
% supplied through public information services of CZ.NIC association,
% are appointed only for purposes connected with Internet network
% administration and operation, or for the purpose of legal or other
% similar proceedings, in process as regards a matter connected
% particularly with holding and using a concrete domain name.
%
% Full text available at:
% http://www.nic.cz/page/306/intended-use-of-supplied-data-and-information/
%
% See also a search service at http://www.nic.cz/whois/
%
%
% Whoisd Server Version: 3.12.2
% Timestamp: Mon Oct 16 13:28:35 2023
domain: crk.cz
registrant: CESKY-RADIOKLUB
admin-c: GUN389-20001206P
nsset: WEB4U
keyset: WEB4U
registrar: REG-WEB4U
registered: 06.12.2000 16:43:00
changed: 01.12.2014 08:27:01
expire: 08.12.2023
contact: CESKY-RADIOKLUB
org: CESKY RADIOKLUB
name: CESKY RADIOKLUB
address: U Pergamenky 3
address: Praha 7
address: 17000
address: CZ
registrar: REG-MOJEID
created: 01.12.2014 08:22:21
contact: GUN389-20001206P
org: Český radioklub
name: Josef Zabavík
address: U Pergamenky 3
address: Praha 7
address: 17000
address: CZ
registrar: REG-WEB4U
created: 10.08.2001 22:13:00
changed: 15.05.2018 21:32:00
nsset: WEB4U
nserver: ns2.web4u.cz (85.207.53.12, 2a02:a40:100:28ff::12)
nserver: ns.web4u.cz (185.14.224.241, 2001:1568:fd::241)
tech-c: WEB4U
registrar: REG-WEB4U
created: 03.10.2007 14:53:59
changed: 24.04.2023 10:14:55
contact: WEB4U
org: Web4U s.r.o.
name: František Princ
address: Korunní 2569/108
address: Vinohrady
address: Praha 10
address: 10100
address: CZ
registrar: REG-WEB4U
created: 03.10.2007 14:48:14
changed: 24.04.2023 10:14:55
keyset: WEB4U
dnskey: 257 3 14 n/2fsBmhKHkGDjP5cOlbmUPB5DfVSDzAean7RjBjf8DbGV7Nx5f5Ao2sec7u7NrO2iLiSfH7bmBYs9U8fqkPiHwnj2jBI97K4/EYwfGR7LIuiCovoXo7igqu61iBP5QX
tech-c: WEB4U
registrar: REG-WEB4U
created: 23.09.2009 14:06:52
changed: 25.07.2023 11:36:15
crk.cz server information
Servers Location
crk.cz desktop page speed rank
Last tested: 2017-05-30
Desktop Speed
Medium
79/100
crk.cz Desktop Speed Test Quick Summary
priority - 8Optimize images
Properly formatting and compressing images can save many bytes of data.
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priority - 6Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 6 blocking script resources and 8 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://www.crk.cz/misc/jquery.js?h
http://www.crk.cz/misc/drupal.js?h
http://www.crk.cz/sites/default/files/languages/cs…476fed3110e224491.js?h
http://www.crk.cz/modules/google_analytics/googleanalytics.js?h
http://www.crk.cz/sites/all/themes/crk/fontSizer.js
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http://www.crk.cz/modules/google_analytics/googleanalytics.js?h
http://www.crk.cz/sites/all/themes/crk/fontSizer.js
http://www.crk.cz/sites/all/themes/crk/contrast.js
Optimize CSS Delivery of the following:
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http://www.crk.cz/modules/node/node.css?h
http://www.crk.cz/modules/poll/poll.css?h
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http://www.crk.cz/sites/all/themes/crk/style.css?h
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http://www.crk.cz/modules/system/system-menus.css?h
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http://www.crk.cz/sites/all/themes/crk/style.css?h
priority - 4Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
http://www.crk.cz/modules/google_cse/google_cse.css?h (1 second)
http://www.crk.cz/modules/node/node.css?h (1 second)
http://www.crk.cz/modules/poll/poll.css?h (1 second)
http://www.crk.cz/modules/system/defaults.css?h (1 second)
http://www.crk.cz/modules/system/system-menus.css?h (1 second)
http://www.crk.cz/modules/system/system.css?h (1 second)
http://www.crk.cz/modules/user/user.css?h (1 second)
http://www.crk.cz/sites/all/themes/crk/print.css?h (1 second)
http://www.crk.cz/sites/all/themes/crk/style.css?h (1 second)
http://www.crk.cz/modules/node/node.css?h (1 second)
http://www.crk.cz/modules/poll/poll.css?h (1 second)
http://www.crk.cz/modules/system/defaults.css?h (1 second)
http://www.crk.cz/modules/system/system-menus.css?h (1 second)
http://www.crk.cz/modules/system/system.css?h (1 second)
http://www.crk.cz/modules/user/user.css?h (1 second)
http://www.crk.cz/sites/all/themes/crk/print.css?h (1 second)
http://www.crk.cz/sites/all/themes/crk/style.css?h (1 second)
priority - 3Reduce server response time
priority - 3Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://crk.cz/
http://www.crk.cz/
http://www.crk.cz/CZ
http://www.crk.cz/
http://www.crk.cz/CZ
priority - 0Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 2.6KiB (51% reduction).
Minifying http://www.crk.cz/misc/drupal.js?h could save 2.1KiB (60% reduction) after compression.
Minifying http://www.crk.cz/sites/all/themes/crk/fontSizer.js could save 571B (34% reduction) after compression.
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priority - 0Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 1.3KiB (24% reduction).
Minifying http://www.crk.cz/modules/system/system.css?h could save 726B (26% reduction) after compression.
Minifying http://www.crk.cz/sites/all/themes/crk/style.css?h could save 561B (23% reduction) after compression.
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priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 706B (11% reduction).
Minifying http://www.crk.cz/CZ could save 706B (11% reduction) after compression.
crk.cz Desktop Resource Breakdown
| Total Resources | 45 |
| Number of Hosts | 4 |
| Static Resources | 41 |
| JavaScript Resources | 6 |
| CSS Resources | 9 |
crk.cz mobile page speed rank
Last tested: 2017-05-30
Mobile Speed
Medium
66/100
crk.cz Mobile Speed Test Quick Summary
priority - 24Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 6 blocking script resources and 8 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://www.crk.cz/misc/jquery.js?h
http://www.crk.cz/misc/drupal.js?h
http://www.crk.cz/sites/default/files/languages/cs…476fed3110e224491.js?h
http://www.crk.cz/modules/google_analytics/googleanalytics.js?h
http://www.crk.cz/sites/all/themes/crk/fontSizer.js
http://www.crk.cz/sites/all/themes/crk/contrast.js
http://www.crk.cz/misc/drupal.js?h
http://www.crk.cz/sites/default/files/languages/cs…476fed3110e224491.js?h
http://www.crk.cz/modules/google_analytics/googleanalytics.js?h
http://www.crk.cz/sites/all/themes/crk/fontSizer.js
http://www.crk.cz/sites/all/themes/crk/contrast.js
Optimize CSS Delivery of the following:
http://www.crk.cz/modules/google_cse/google_cse.css?h
http://www.crk.cz/modules/node/node.css?h
http://www.crk.cz/modules/poll/poll.css?h
http://www.crk.cz/modules/system/defaults.css?h
http://www.crk.cz/modules/system/system.css?h
http://www.crk.cz/modules/system/system-menus.css?h
http://www.crk.cz/modules/user/user.css?h
http://www.crk.cz/sites/all/themes/crk/style.css?h
http://www.crk.cz/modules/node/node.css?h
http://www.crk.cz/modules/poll/poll.css?h
http://www.crk.cz/modules/system/defaults.css?h
http://www.crk.cz/modules/system/system.css?h
http://www.crk.cz/modules/system/system-menus.css?h
http://www.crk.cz/modules/user/user.css?h
http://www.crk.cz/sites/all/themes/crk/style.css?h
priority - 10Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://crk.cz/
http://www.crk.cz/
http://www.crk.cz/CZ
http://www.crk.cz/
http://www.crk.cz/CZ
priority - 8Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 78.7KiB (49% reduction).
Compressing http://www.crk.cz/sites/default/files/home_image.jpg could save 60.7KiB (62% reduction).
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Compressing http://www.crk.cz/design/images/banner.jpg could save 3.3KiB (14% reduction).
Compressing http://www.crk.cz/design/images/img_morse.jpg could save 1.7KiB (39% reduction).
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Compressing http://www.crk.cz/design/images/img_maxwell.jpg could save 1.5KiB (39% reduction).
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priority - 7Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
http://www.crk.cz/modules/google_cse/google_cse.css?h (1 second)
http://www.crk.cz/modules/node/node.css?h (1 second)
http://www.crk.cz/modules/poll/poll.css?h (1 second)
http://www.crk.cz/modules/system/defaults.css?h (1 second)
http://www.crk.cz/modules/system/system-menus.css?h (1 second)
http://www.crk.cz/modules/system/system.css?h (1 second)
http://www.crk.cz/modules/user/user.css?h (1 second)
http://www.crk.cz/sites/all/themes/crk/print.css?h (1 second)
http://www.crk.cz/sites/all/themes/crk/style.css?h (1 second)
http://www.crk.cz/modules/node/node.css?h (1 second)
http://www.crk.cz/modules/poll/poll.css?h (1 second)
http://www.crk.cz/modules/system/defaults.css?h (1 second)
http://www.crk.cz/modules/system/system-menus.css?h (1 second)
http://www.crk.cz/modules/system/system.css?h (1 second)
http://www.crk.cz/modules/user/user.css?h (1 second)
http://www.crk.cz/sites/all/themes/crk/print.css?h (1 second)
http://www.crk.cz/sites/all/themes/crk/style.css?h (1 second)
priority - 5Reduce server response time
priority - 0Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 2.6KiB (51% reduction).
Minifying http://www.crk.cz/misc/drupal.js?h could save 2.1KiB (60% reduction) after compression.
Minifying http://www.crk.cz/sites/all/themes/crk/fontSizer.js could save 571B (34% reduction) after compression.
Minifying http://www.crk.cz/sites/all/themes/crk/fontSizer.js could save 571B (34% reduction) after compression.
priority - 0Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 1.3KiB (24% reduction).
Minifying http://www.crk.cz/modules/system/system.css?h could save 726B (26% reduction) after compression.
Minifying http://www.crk.cz/sites/all/themes/crk/style.css?h could save 561B (23% reduction) after compression.
Minifying http://www.crk.cz/sites/all/themes/crk/style.css?h could save 561B (23% reduction) after compression.
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 706B (11% reduction).
Minifying http://www.crk.cz/CZ could save 706B (11% reduction) after compression.
crk.cz Mobile Resource Breakdown
| Total Resources | 45 |
| Number of Hosts | 4 |
| Static Resources | 41 |
| JavaScript Resources | 6 |
| CSS Resources | 9 |
crk.cz mobile page usability
Last tested: 2017-05-30
Mobile Usability
Bad
59/100
crk.cz Mobile Usability Test Quick Summary
priority - 39Use legible font sizes
The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.
The following text fragments have a small font size. Increase the font size to make them more legible.
english renders only 5 pixels tall (12 CSS pixels).česky renders only 5 pixels tall (12 CSS pixels).Aktuality a ne…ější informace and 5 others render only 5 pixels tall (13 CSS pixels).• Nahlášení e-…ckého časopisu and 37 others render only 4 pixels tall (11 CSS pixels).Přihlášení (jméno / heslo) renders only 5 pixels tall (13 CSS pixels).Nahlášení e-ma…ckého časopisu and 15 others render only 5 pixels tall (13 CSS pixels).Nový web se mi líbí: renders only 5 pixels tall (13 CSS pixels).Méně než původní and 2 others render only 5 pixels tall (13 CSS pixels).Hledat renders only 5 pixels tall (13 CSS pixels).ČRK renders only 5 pixels tall (13 CSS pixels).Úvodní strana renders only 5 pixels tall (13 CSS pixels).Nahlášení e-ma…ckého časopisu renders only 6 pixels tall (16 CSS pixels).• renders only 5 pixels tall (13 CSS pixels).Navštěvujete n…tránky poprvé? and 1 others render only 5 pixels tall (13 CSS pixels).sdružuje přáte…radioamatérem. renders only 5 pixels tall (13 CSS pixels).• and 4 others render only 5 pixels tall (13 CSS pixels).Můžete přejíma…lušné stránky. and 6 others render only 5 pixels tall (13 CSS pixels).členství a příspěvky and 3 others render only 5 pixels tall (13 CSS pixels).!!! Pokud máte…yk stránky viz and 1 others render only 6 pixels tall (16 CSS pixels).odkaz renders only 6 pixels tall (16 CSS pixels).» renders only 5 pixels tall (13 CSS pixels).845466x přečteno renders only 5 pixels tall (13 CSS pixels).Aktuality renders only 7 pixels tall (18 CSS pixels).23.12.2016 and 14 others render only 5 pixels tall (13 CSS pixels).- and 14 others render only 5 pixels tall (13 CSS pixels).Objevitelé a zakladatelé renders only 5 pixels tall (14 CSS pixels).Maxwell and 5 others render only 5 pixels tall (13 CSS pixels).Užitečné odkazy renders only 7 pixels tall (18 CSS pixels).Mezinárodní ra…RU - Region I. and 18 others render only 5 pixels tall (12 CSS pixels).Copyright ©200…ký radioklub / and 4 others render only 5 pixels tall (13 CSS pixels).Kompletní kontakt and 3 others render only 5 pixels tall (13 CSS pixels).Firefox a neko…razení stránek and 4 others render only 5 pixels tall (13 CSS pixels).| and 3 others render only 5 pixels tall (13 CSS pixels).priority - 24Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target
<a href="/ENG">english</a> is close to 3 other tap targets.The tap target
<a href="/CZ" class="active">česky</a> is close to 4 other tap targets.The tap target
<a href="#"></a> and 4 others are close to other tap targets.The tap target
<a href="/CZ/AKTUALITYC" class="sub1">Aktuality a ne…ější informace</a> and 5 others are close to other tap targets.The tap target
<a href="/CZ/node/1469" class="sub2">• Nahlášení e-…ckého časopisu</a> and 37 others are close to other tap targets.The tap target
<input type="text" name="name" class="inp"> is close to 1 other tap targets.The tap target
<input type="submit" class="submit ok"> is close to 1 other tap targets.The tap target
<a href="/CZ/user/password">Zaslat nové heslo</a> and 16 others are close to other tap targets.The tap target
<label for="edit-choice-0" class="option">Více než původní</label> and 2 others are close to other tap targets.The tap target
<label for="edit-choice-0" class="option">Více než původní</label> and 5 others are close to other tap targets.The tap target
<input id="edit-vote" type="submit" name="op" class="form-submit"> is close to 2 other tap targets.The tap target
<input type="submit" class="submit zoom"> is close to 2 other tap targets.The tap target
<a href="http://okomdx.crk.cz/">OK-OM DX CW Contest</a> and 18 others are close to other tap targets.The tap target
<a href="http://www.crk.cz/CZ">www.crk.cz</a> and 2 others are close to other tap targets.The tap target
<a href="http://www.crk.cz/CZ/node/1449" class="">Firefox a neko…razení stránek</a> and 5 others are close to other tap targets.priority - 10Configure the viewport
Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.
crk.cz HTML validation
Errors
Obsolete doctype. Expected “<!DOCTYPE html>”.
Line: 1 Column: 1 - 109
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html..."
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html..."
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Line: 154 Column: 1 - 18
"...center;"> <p align="center"><img t..." Line: 155 Column: 1 - 17
"...g" /></p> <p align="right"> </p> ..."
"...center;"> <p align="center"><img t..." Line: 155 Column: 1 - 17
"...g" /></p> <p align="right"> </p> ..."
The “font” element is obsolete. Use CSS instead.
Line: 159 Column: 32 - 73
"... center;"><font style="font-size: medium;" size="4">!!! Po..."
"... center;"><font style="font-size: medium;" size="4">!!! Po..."
Warnings
Empty heading.
Line: 81 Column: 5 - 22
"...k-1"> <h2 class="title"></h2> ..." Line: 251 Column: 5 - 22
"...k-4"> <h2 class="title"></h2> ..."
"...k-1"> <h2 class="title"></h2> ..." Line: 251 Column: 5 - 22
"...k-4"> <h2 class="title"></h2> ..."
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crk.cz Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
crk.cz TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.