Web Server Statistics for Knowledge Navigation Center

Program started at Mon-03-Feb-2003 12:04.
Analysed requests from Wed-01-Jan-2003 02:53 to Fri-31-Jan-2003 03:37 (30.03 days).

General Summary

(Go To: Top: General Summary: Weekly Report: Daily Report: Daily Summary: Hourly Summary: Domain Report: Organisation Report: Host Report: Referrer Report: Search Word Report: Browser Report: Browser Summary: Operating System Report: Status Code Report: File Size Report: File Type Report: Directory Report: Request Report)

Successful requests: 1,993
Average successful requests per day: 66
Successful requests for pages: 1,022
Average successful requests for pages per day: 33
Failed requests: 328
Redirected requests: 2
Distinct files requested: 150
Distinct hosts served: 178
Data transferred: 65.277 Mbytes
Average data transferred per day: 2.173 Mbytes

Weekly Report

Each unit () represents 60 requests for pages or part thereof.

week beg.: reqs:  Mbytes: %bytes:  %reqs: pages: 
---------: ----: -------: ------: ------: -----: 
29/Dec/02:  102:   1.118:  1.71%:  5.12%:    21: 
 5/Jan/03:  385:   9.134: 13.99%: 19.32%:    53: 
12/Jan/03:  338:   6.980: 10.69%: 16.96%:    66: 
19/Jan/03: 1112:  46.275: 70.89%: 55.80%:   859: 
26/Jan/03:   56:   1.768:  2.71%:  2.81%:    23:

Busiest week: week beginning 19/Jan/03 (859 requests for pages).

Daily Report

Each unit () represents 50 requests for pages or part thereof.

     date: reqs:  Mbytes: %bytes:  %reqs: pages: 
---------: ----: -------: ------: ------: -----: 
 1/Jan/03:   10:   0.435:  0.67%:  0.50%:     5: 
 2/Jan/03:    2:   0.000:       :  0.10%:     2: 
 3/Jan/03:    7:   0.104:  0.16%:  0.35%:     3: 
 4/Jan/03:   83:   0.578:  0.89%:  4.16%:    11: 

 5/Jan/03:    4:   0.012:  0.02%:  0.20%:     4: 
 6/Jan/03:   62:   1.660:  2.54%:  3.11%:     8: 
 7/Jan/03:   54:   0.491:  0.75%:  2.71%:     6: 
 8/Jan/03:   30:   1.931:  2.96%:  1.51%:     8: 
 9/Jan/03:   50:   0.699:  1.07%:  2.51%:     8: 
10/Jan/03:   79:   2.024:  3.10%:  3.96%:     9: 
11/Jan/03:  106:   2.316:  3.55%:  5.32%:    10: 

12/Jan/03:   25:   1.231:  1.89%:  1.25%:     5: 
13/Jan/03:  152:   2.104:  3.22%:  7.63%:    15: 
14/Jan/03:    6:   0.101:  0.16%:  0.30%:     2: 
15/Jan/03:   77:   2.064:  3.16%:  3.86%:     7: 
16/Jan/03:   28:   0.675:  1.04%:  1.40%:     7: 
17/Jan/03:   36:   0.597:  0.92%:  1.81%:    24: 
18/Jan/03:   14:   0.203:  0.31%:  0.70%:     6: 

19/Jan/03:   57:   1.679:  2.57%:  2.86%:     5: 
20/Jan/03:   48:   1.185:  1.82%:  2.41%:     6: 
21/Jan/03:   72:   0.968:  1.48%:  3.61%:    13: 
22/Jan/03:   19:   1.768:  2.71%:  0.95%:     6: 
23/Jan/03:  163:   7.969: 12.21%:  8.18%:   146: 
24/Jan/03:  720:  31.536: 48.31%: 36.13%:   657: 
25/Jan/03:   33:   1.167:  1.79%:  1.66%:    26: 

26/Jan/03:   34:   1.545:  2.37%:  1.71%:     6: 
27/Jan/03:    5:   0.098:  0.15%:  0.25%:     4: 
28/Jan/03:    9:   0.122:  0.19%:  0.45%:     5: 
29/Jan/03:    5:   0.002:       :  0.25%:     5: 
30/Jan/03:    2:   0.000:       :  0.10%:     2: 
31/Jan/03:    1:   0.000:       :  0.05%:     1:

Busiest day: 24/Jan/03 (657 requests for pages).

Daily Summary

Each unit () represents 40 requests for pages or part thereof.

day: reqs:  Mbytes: %bytes:  %reqs: pages: 
---: ----: -------: ------: ------: -----: 
Sun:  120:   4.468:  6.85%:  6.02%:    20: 
Mon:  267:   5.048:  7.73%: 13.40%:    33: 
Tue:  141:   1.684:  2.58%:  7.07%:    26: 
Wed:  141:   6.201:  9.50%:  7.07%:    31: 
Thu:  245:   9.343: 14.31%: 12.29%:   165: 
Fri:  843:  34.263: 52.49%: 42.30%:   694: 
Sat:  236:   4.265:  6.53%: 11.84%:    53:

Hourly Summary

Each unit () represents 3 requests for pages or part thereof.

hr: reqs:  Mbytes: %bytes:  %reqs: pages: 
--: ----: -------: ------: ------: -----: 
 0:   54:   2.329:  3.57%:  2.71%:    51: 
 1:   44:   1.551:  2.38%:  2.21%:    33: 
 2:   98:   2.732:  4.19%:  4.92%:    37: 
 3:   57:   1.520:  2.33%:  2.86%:    35: 
 4:   57:   2.034:  3.12%:  2.86%:    38: 
 5:   64:   2.861:  4.38%:  3.21%:    33: 
 6:   38:   1.704:  2.61%:  1.91%:    31: 
 7:   34:   1.250:  1.92%:  1.71%:    30: 
 8:   98:   1.794:  2.75%:  4.92%:    35: 
 9:  103:   1.763:  2.70%:  5.17%:    37: 
10:   62:   2.865:  4.39%:  3.11%:    32: 
11:  161:   4.043:  6.19%:  8.08%:    46: 
12:  117:   3.317:  5.08%:  5.87%:    42: 
13:   69:   1.796:  2.75%:  3.46%:    33: 
14:  106:   3.725:  5.71%:  5.32%:    41: 
15:   94:   4.168:  6.39%:  4.72%:    36: 
16:  140:   4.718:  7.23%:  7.02%:    41: 
17:  110:   3.409:  5.22%:  5.52%:    39: 
18:   73:   2.601:  3.98%:  3.66%:    41: 
19:   62:   2.809:  4.30%:  3.11%:    57: 
20:   94:   3.344:  5.12%:  4.72%:    65: 
21:   82:   2.953:  4.52%:  4.11%:    68: 
22:   76:   3.084:  4.72%:  3.81%:    60: 
23:  100:   2.898:  4.44%:  5.02%:    61:

Domain Report

Listing domains with at least 0.5% of the traffic, sorted by the amount of traffic.

reqs:  Mbytes: %bytes:  %reqs: pages: domain
----: -------: ------: ------: -----: ------
1132:  45.551: 69.78%: 56.80%:   870: [unresolved numerical addresses]
 262:   6.481:  9.93%: 13.15%:    51: .com (Commercial)
 264:   5.562:  8.52%: 13.25%:    46: .net (Network)
  23:   1.421:  2.18%:  1.15%:     3: .ca (Canada)
  19:   1.217:  1.87%:  0.95%:     3: .uk (United Kingdom)
  16:   1.062:  1.63%:  0.80%:     4: .be (Belgium)
  13:   0.625:  0.96%:  0.65%:     1: .fo (Faroe Islands)
  94:   0.606:  0.93%:  4.72%:     7: .edu (USA Educational)
  13:   0.432:  0.66%:  0.65%:     2: .org (Non-Profit Making Organizations)
   8:   0.381:  0.58%:  0.40%:     1: .mx (Mexico)
   5:   0.361:  0.55%:  0.25%:     1: .br (Brazil)
 144:   1.572:  2.41%:  7.23%:    33: [not listed: 19 domains]

Organisation Report

Listing the first 20 organisations by the number of requests, sorted by the number of requests.

reqs: %bytes: organisation
----: ------: ------------
1132: 69.78%: [unresolved numerical addresses]
  55:  2.10%: rr.com
  47:  4.14%: cox.net
  46:  1.96%: ntl.com
  41:  0.20%: brown.edu
  40:  0.21%: reliable-net.net
  37:  2.44%: wcomnet.com
  23:  0.11%: dsl-verizon.net
  23:  0.35%: direcpc.com
  23:  0.35%: cox-internet.com
  22:  0.33%: ncsu.edu
  21:  0.11%: ssmn.cl
  21:  0.16%: rima-tde.net
  20:  0.16%: link.si
  20:  0.16%: ianryan.com
  20:  0.50%: directhit.com
  20:  0.07%: comcast.net
  20:  0.16%: interbusiness.it
  20:  0.09%: umich.edu
  13:  0.49%: att.net
 329: 16.13%: [not listed: 72 organisations]

Host Report

Listing hosts with at least 100 requests, sorted by the number of requests.

reqs:  Mbytes: %bytes:  %reqs: host
----: -------: ------: ------: ----
 819:  37.758: 57.84%: 41.09%: 63.164.145.33
1174:  27.519: 42.16%: 58.91%: [not listed: 177 hosts]

Referrer Report

Listing the first 25 referring URLs by the number of requests, sorted by the number of requests.

reqs:  Mbytes: %bytes:  %reqs: URL
----: -------: ------: ------: ---
 327:   9.335: 58.71%: 34.79%: http://classical.rs.itd.umich.edu/guides/
 151:   0.523:  3.29%: 16.06%: http://classical.rs.itd.umich.edu/facilities/browsing.html
  78:   2.296: 14.44%:  8.30%: http://www.google.com/search
  22:   0.213:  1.35%:  2.34%:   http://www.google.com/search?q=cache:L9ry2loaZuAC:classical.rs.itd.umich.edu/guides/OCR/ocr.html+Optical+Character+Recognition+omnipages&hl=en&ie=UTF-8
  67:   0.642:  4.04%:  7.13%: http://classical.rs.itd.umich.edu/guides/OCR/ocr.html
  52:   0.043:  0.27%:  5.53%: http://classical.rs.itd.umich.edu/bmip/
  39:   0.073:  0.46%:  4.15%: http://classical.rs.itd.umich.edu/guides/wsftp.html
  35:   0.182:  1.15%:  3.72%: http://classical.rs.itd.umich.edu/guides/Photoshop/
  32:   0.101:  0.64%:  3.40%: http://classical.rs.itd.umich.edu/about/staff.html
  22:   0.056:  0.36%:  2.34%: http://classical.rs.itd.umich.edu/about/patrons.html
  19:   0.074:  0.47%:  2.02%: http://216.239.53.100/search
  19:   0.074:  0.47%:  2.02%:   http://216.239.53.100/search?q=cache:L-zADDPTFtYC:classical.rs.itd.umich.edu/facilities/browsing.html+Alison+Balter+Access+pdf"Mastering+Microsoft+Access"&hl=en&ie=UTF-8
  19:   0.062:  0.39%:  2.02%: http://classical.rs.itd.umich.edu/facilities/hardware.html
  16:   0.210:  1.32%:  1.70%: http://classical.rs.itd.umich.edu/guides/Photoshop/button.htm
  12:   0.059:  0.37%:  1.28%: http://www.google.co.jp/search
  12:   0.059:  0.37%:  1.28%:   http://www.google.co.jp/search?q=cache:jJvNl-5TR0QC:classical.rs.itd.umich.edu/facilities/software.html+Macromedia+Flashit&hl=ja&ie=UTF-8&inlang=ja
  12:   0.461:  2.90%:  1.28%: http://search.yahoo.com/search
   8:   0.114:  0.72%:  0.85%: http://classical.rs.itd.umich.edu/guides/Photoshop/image_types.htm
   7:   0.086:  0.54%:  0.74%: http://classical.rs.itd.umich.edu/guides/Photoshop/wand.htm
   6:   0.275:  1.73%:  0.64%: http://www.google.ca/search
   6:   0.093:  0.59%:  0.64%: http://classical.rs.itd.umich.edu/guides/Photoshop/transparent.htm
   5:   0.118:  0.74%:  0.53%: http://216.239.57.100/search
   4:   0.183:  1.16%:  0.43%: http://www.google.com.au/search
   4:   0.014:  0.09%:  0.43%: http://classical.rs.itd.umich.edu/guides/CourseWeb/interactive/interactive.html
   2:   0.091:  0.58%:  0.21%: http://search.yahoo.com/bin/search
   2:   0.077:  0.48%:  0.21%: http://www.google.co.uk/search
   2:   0.091:  0.58%:  0.21%: http://www.google.fr/search
   2:   0.091:  0.58%:  0.21%: http://search.yahoo.com/bin/query_msie
  11:   0.540:  3.40%:  1.17%: [not listed: 11 URLs]

Search Word Report

Listing the first 20 query words by the number of requests, sorted by the number of requests.

reqs: search term
----: -----------
  22: cache:l9ry2loazuac:classical.rs.itd.umich.edu/guides/ocr/ocr.html
  22: omnipages
  22: optical
  22: character
  22: recognition
  17: dreamweaver
  14: in
  13: photoshop
  12: macromedia
  12: flashit
  12: cache:jjvnl
  12: 5tr0qc:classical.rs.itd.umich.edu/facilities/software.html
  11: tutorials
  10: with
   8: pdf
   7: excel
   7: word
   6: and
   6: powerpoint
   6: pagemaker
 304: [not listed: 171 search terms]

Browser Report

Listing the first 40 browsers by the number of requests, sorted by the number of requests.

reqs:  Mbytes: %bytes:  %reqs: browser
----: -------: ------: ------: -------
 820:  37.327: 57.19%: 42.16%: Mozilla/3.01 (compatible;)
 234:   6.925: 10.61%: 12.03%: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
  85:   0.690:  1.06%:  4.37%: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98)
  80:   1.443:  2.21%:  4.11%: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
  68:   3.075:  4.71%:  3.50%: Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)
  66:   0.526:  0.81%:  3.39%: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705)
  59:   0.630:  0.97%:  3.03%: Mozilla/4.0 (compatible; MSIE 6.0; Windows 98)
  57:   0.632:  0.97%:  2.93%: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.0.3705)
  37:   1.591:  2.44%:  1.90%: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; 1.41.1 )
  29:   0.328:  0.50%:  1.49%: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 4.0)
  27:   0.000:       :  1.39%: Microsoft-WebDAV-MiniRedir/5.1.2600
  23:   0.226:  0.35%:  1.18%: Mozilla/4.0 (compatible; MSIE 5.0; MSN 2.5; Windows 98; Compaq; DigExt)
  22:   1.671:  2.56%:  1.13%: Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)
  21:   0.230:  0.35%:  1.08%: Mozilla/4.0 (compatible; MSIE 5.0; Windows 98; DigExt)
  20:   0.058:  0.09%:  1.03%: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0
  19:   0.047:  0.07%:  0.98%: Mozilla/4.0 (compatible; MSIE 6.0; MSIE 5.5; Windows XP) Opera 7.0  [en]
  19:   0.074:  0.11%:  0.98%: Mozilla/4.0 (compatible; MSIE 5.01; Windows 98)
  19:   0.044:  0.07%:  0.98%: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; YComp 5.0.0.0; H010818)
  16:   0.301:  0.46%:  0.82%: Mozilla/2.0 (compatible; Ask Jeeves/Teoma)
  13:   0.321:  0.49%:  0.67%: Mozilla/4.0 (compatible; MSIE 6.0; Windows 98; AT&T CSM6.0)
  13:   0.855:  1.31%:  0.67%: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0)
  13:   0.690:  1.06%:  0.67%: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; T312461)
  10:   0.203:  0.31%:  0.51%: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; YComp 5.0.2.6)
  10:   0.203:  0.31%:  0.51%: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Q312461)
   9:   0.913:  1.40%:  0.46%: Mozilla/4.0 (compatible; MSIE 5.0; Mac_PowerPC)
   8:   0.224:  0.34%:  0.41%: Mozilla/4.0 (compatible; MSIE 6.0; Windows 98; OD ISP Generic)
   8:   0.164:  0.25%:  0.41%: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461)
   8:   0.235:  0.36%:  0.41%: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; (R1 1.1))
   8:   0.640:  0.98%:  0.41%: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Hotbar 4.1.8.0; .NET CLR 1.0.3705)
   7:   0.976:  1.50%:  0.36%: Mozilla/4.76 [en] (Windows NT 5.0; U)
   7:   0.951:  1.46%:  0.36%: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0
   6:   0.421:  0.65%:  0.31%: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0
   5:   0.101:  0.16%:  0.26%: Mozilla/4.7 (Macintosh; I; PPC)
   5:   0.101:  0.16%:  0.26%: Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en-US; rv:1.0.1) Gecko/20021204 Chimera/0.6+
   5:   0.101:  0.16%:  0.26%: Mozilla/4.0 (compatible; MSIE 6.0; Windows 98; Win 9x 4.90; Avant Browser [avantbrowser.com]; Hotbar 4.1.8.0)
   5:   0.101:  0.16%:  0.26%: Mozilla/4.0 (compatible; MSIE 6.0b; Windows 98; YComp 5.0.0.0)
   5:   0.101:  0.16%:  0.26%: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Hotbar 4.1.8.0)
   5:   0.101:  0.16%:  0.26%: Mozilla/4.0 (compatible; MSIE 5.16; Mac_PowerPC)
   5:   0.101:  0.16%:  0.26%: Mozilla/4.79 [en] (Win98; U)
   5:   0.101:  0.16%:  0.26%: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; H010818)
  64:   1.816:  2.78%:  3.29%: [not listed: 21 browsers]

Browser Summary

Listing browsers, sorted by the number of requests.

reqs:  Mbytes: %bytes:  %reqs: browser
----: -------: ------: ------: -------
 993:  24.731: 37.90%: 51.05%: MSIE
 840:  37.656: 57.70%: 43.19%: Netscape (compatible)
  61:   2.815:  4.31%:  3.14%: Netscape
  27:   0.000:       :  1.39%: Microsoft-WebDAV-MiniRedir
  20:   0.059:  0.09%:  1.03%: Opera
   4:   0.000:       :  0.21%: contype

Operating System Report

Listing operating systems, sorted by the number of requests.

no.: reqs: OS
---: ----: --
  1: 1024: Windows
   :  644:   Windows 2000
   :  282:   Windows 98
   :   37:   Unknown Windows
   :   32:   Windows NT
   :   23:   Windows Me
   :    6:   Windows 95
  2:  871: OS unknown
  3:   30: Macintosh
   :   30:   Macintosh PowerPC
  4:   20: Unix
   :   20:   Linux

Status Code Report

Listing status codes, sorted numerically.

reqs: status code
----: -----------
1865: 200 OK
  74: 206 Partial content
   2: 301 Document moved permanently
  54: 304 Not modified since last retrieval
  42: 400 Bad request
   1: 403 Access forbidden
 279: 404 Document not found
   6: 408 Request timeout

File Size Report

       size: reqs: %bytes: 
-----------: ----: ------: 
          0:  159:       : 
   1b-  10b:    0:       : 
  11b- 100b:    0:       : 
 101b-  1kb:  335:  0.23%: 
  1kb- 10kb:  193:  1.75%: 
 10kb-100kb: 1257: 74.94%: 
100kb-  1Mb:   49: 23.08%:

File Type Report

Listing extensions with at least 0.1% of the traffic, sorted by the amount of traffic.

reqs: %bytes: extension
----: ------: ---------
 977: 62.83%: [directories]
 135: 26.15%: .pdf  [Adobe Portable Document Format]
 684:  5.21%: .gif  [GIF graphics]
 131:  3.78%: .jpg  [JPEG graphics]
  16:  1.08%: .JPG
  41:  0.88%: .html [Hypertext Markup Language]
   9:  0.06%: [not listed: 3 extensions]

Directory Report

Listing directories with at least 0.1% of the traffic, sorted by the amount of traffic.

reqs:  Mbytes: %bytes:  %reqs: directory
----: -------: ------: ------: ---------
1307:  61.945: 94.89%: 65.58%: /guides/
 575:   2.828:  4.33%: 28.85%: /images/
   9:   0.263:  0.40%:  0.45%: /facilities/
  12:   0.103:  0.16%:  0.60%: /bmip/
   8:   0.088:  0.14%:  0.40%: /about/
  82:   0.047:  0.07%:  4.11%: [not listed: 4 directories]

Request Report

Listing files with at least 0.5% of the requests, sorted by the number of requests.

reqs:  Mbytes: %bytes:  %reqs: file
----: -------: ------: ------: ----
 890:  40.723: 62.39%: 44.66%: /guides/
  97:   0.735:  1.13%:  4.87%: /images/home/stamp2.gif
  89:   1.495:  2.29%:  4.47%: /images/home/library.jpg
  77:   1.251:  1.92%:  3.86%: /guides/Image/faculty_exploratory.gif
  76:   0.964:  1.48%:  3.81%: /guides/Image/banner.gif
  73:   0.016:  0.03%:  3.66%: /
  24:   0.010:  0.02%:  1.20%: /images/oncontact.gif
  24:   0.009:  0.01%:  1.20%: /images/offserv.gif
  24:   0.010:  0.02%:  1.20%: /images/offworks.gif
  24:   0.008:  0.01%:  1.20%: /images/offsite.gif
  24:   0.010:  0.02%:  1.20%: /images/offcontact.gif
  24:   0.010:  0.02%:  1.20%: /images/onworks.gif
  24:   0.008:  0.01%:  1.20%: /images/offsearch.gif
  23:   0.008:  0.01%:  1.15%: /images/onsite.gif
  23:   0.007:  0.01%:  1.15%: /images/onsearch.gif
  23:   0.009:  0.01%:  1.15%: /images/onserv.gif
  21:   0.010:  0.02%:  1.05%: /images/offabout.gif
  20:   0.009:  0.01%:  1.00%: /images/onabout.gif
  19:   1.643:  2.52%:  0.95%: /guides/web/navGraphicsNavBar.pdf
  14:   0.004:  0.01%:  0.70%: /images/offguides.gif
  13:   0.004:  0.01%:  0.65%: /images/onguides.gif
  13:   0.005:  0.01%:  0.65%: /images/onfacilities.gif
  13:   0.005:  0.01%:  0.65%: /images/offfacilities.gif
  11:   0.012:  0.02%:  0.55%: /images/facilities/2facilities.gif
  11:   0.004:  0.01%:  0.55%: /images/opfacilities.gif
  10:   0.599:  0.92%:  0.50%: /guides/web/GoLive02.pdf
  10:   0.003:  0.01%:  0.50%: /images/opguides.gif
  10:   1.078:  1.65%:  0.50%: /guides/web/dw4.pdf
  10:   0.572:  0.88%:  0.50%: /guides/graphics/fireworks_basics.pdf
 279:  16.042: 24.58%: 14.00%: [not listed: 121 files]

This analysis was produced by analog 4.13.
Running time: 1 second.