Usage Statistics for korovin.pair.com

Summary Period: March 2012
Generated 03-Apr-2012 00:02 EDT

[Daily Statistics] [Hourly Statistics] [URLs] [Entry] [Exit] [Sites] [Referrers] [Search] [Agents] [Countries]

Monthly Statistics for March 2012
Total Hits 4584
Total Files 2926
Total Pages 3133
Total Visits 1305
Total KBytes 142437
Total Unique Sites 793
Total Unique URLs 108
Total Unique Referrers 213
Total Unique Usernames 5
Total Unique User Agents 302
. Avg Max
Hits per Hour 6 121
Hits per Day 147 345
Files per Day 94 288
Pages per Day 101 241
Sites per Day 25 71
Visits per Day 42 71
KBytes per Day 4595 121726
Hits by Response Code
Code 200 - OK 63.83% 2926
Code 206 - Partial Content 0.04% 2
Code 301 - Moved Permanently 0.04% 2
Code 304 - Not Modified 3.01% 138
Code 400 - Bad Request 0.33% 15
Code 401 - Unauthorized 10.12% 464
Code 404 - Not Found 22.12% 1014
Code 405 - Method Not Allowed 0.48% 22
Code 500 - Internal Server Error 0.02% 1

Daily usage for March 2012

Daily Statistics for March 2012
Day Hits Files Pages Visits Sites KBytes
1 87 1.90% 39 1.33% 75 2.39% 30 2.30% 31 3.91% 254 0.18%
2 48 1.05% 37 1.26% 36 1.15% 27 2.07% 27 3.40% 210 0.15%
3 225 4.91% 70 2.39% 195 6.22% 38 2.91% 42 5.30% 653 0.46%
4 81 1.77% 68 2.32% 71 2.27% 35 2.68% 27 3.40% 417 0.29%
5 88 1.92% 75 2.56% 55 1.76% 28 2.15% 27 3.40% 508 0.36%
6 284 6.20% 208 7.11% 138 4.40% 55 4.21% 50 6.31% 121726 85.46%
7 345 7.53% 288 9.84% 152 4.85% 71 5.44% 71 8.95% 2319 1.63%
8 341 7.44% 185 6.32% 241 7.69% 53 4.06% 61 7.69% 1519 1.07%
9 154 3.36% 114 3.90% 86 2.74% 51 3.91% 67 8.45% 1162 0.82%
10 104 2.27% 68 2.32% 74 2.36% 40 3.07% 45 5.67% 576 0.40%
11 84 1.83% 65 2.22% 45 1.44% 33 2.53% 47 5.93% 486 0.34%
12 187 4.08% 147 5.02% 112 3.57% 43 3.30% 55 6.94% 1337 0.94%
13 90 1.96% 74 2.53% 59 1.88% 41 3.14% 48 6.05% 549 0.39%
14 168 3.66% 77 2.63% 123 3.93% 44 3.37% 47 5.93% 782 0.55%
15 195 4.25% 99 3.38% 143 4.56% 39 2.99% 43 5.42% 744 0.52%
16 125 2.73% 96 3.28% 80 2.55% 42 3.22% 45 5.67% 685 0.48%
17 107 2.33% 77 2.63% 64 2.04% 29 2.22% 37 4.67% 671 0.47%
18 158 3.45% 131 4.48% 81 2.59% 36 2.76% 41 5.17% 941 0.66%
19 154 3.36% 121 4.14% 87 2.78% 44 3.37% 47 5.93% 898 0.63%
20 163 3.56% 121 4.14% 116 3.70% 59 4.52% 57 7.19% 804 0.56%
21 136 2.97% 54 1.85% 116 3.70% 42 3.22% 42 5.30% 363 0.25%
22 109 2.38% 85 2.90% 73 2.33% 44 3.37% 45 5.67% 564 0.40%
23 173 3.77% 93 3.18% 145 4.63% 42 3.22% 39 4.92% 555 0.39%
24 87 1.90% 53 1.81% 67 2.14% 39 2.99% 41 5.17% 345 0.24%
25 74 1.61% 56 1.91% 50 1.60% 30 2.30% 36 4.54% 448 0.31%
26 108 2.36% 76 2.60% 75 2.39% 37 2.84% 41 5.17% 570 0.40%
27 98 2.14% 66 2.26% 69 2.20% 42 3.22% 43 5.42% 434 0.30%
28 198 4.32% 65 2.22% 173 5.52% 48 3.68% 41 5.17% 481 0.34%
29 82 1.79% 58 1.98% 64 2.04% 44 3.37% 38 4.79% 322 0.23%
30 190 4.14% 85 2.90% 157 5.01% 53 4.06% 50 6.31% 607 0.43%
31 141 3.08% 75 2.56% 111 3.54% 47 3.60% 42 5.30% 504 0.35%

Hourly usage for March 2012

Hourly Statistics for March 2012
Hour Hits Files Pages KBytes
Avg Total Avg Total Avg Total Avg Total
0 3 115 2.51% 2 62 2.12% 3 94 3.00% 12 379 0.27%
1 4 134 2.92% 2 68 2.32% 3 117 3.73% 14 445 0.31%
2 8 267 5.82% 4 126 4.31% 6 202 6.45% 31 961 0.67%
3 8 275 6.00% 6 190 6.49% 6 192 6.13% 43 1332 0.93%
4 6 194 4.23% 3 113 3.86% 4 132 4.21% 33 1028 0.72%
5 9 298 6.50% 3 95 3.25% 7 234 7.47% 31 959 0.67%
6 8 271 5.91% 5 161 5.50% 6 190 6.06% 40 1236 0.87%
7 5 184 4.01% 4 149 5.09% 3 108 3.45% 36 1122 0.79%
8 4 140 3.05% 3 120 4.10% 2 92 2.94% 31 955 0.67%
9 8 257 5.61% 5 168 5.74% 4 142 4.53% 41 1267 0.89%
10 5 172 3.75% 3 118 4.03% 4 125 3.99% 30 918 0.64%
11 4 150 3.27% 4 128 4.37% 3 97 3.10% 27 851 0.60%
12 4 135 2.95% 3 102 3.49% 2 84 2.68% 22 689 0.48%
13 4 133 2.90% 3 111 3.79% 2 83 2.65% 30 928 0.65%
14 5 166 3.62% 3 103 3.52% 3 114 3.64% 26 803 0.56%
15 7 243 5.30% 5 169 5.78% 3 119 3.80% 300 9311 6.54%
16 12 381 8.31% 7 228 7.79% 7 246 7.85% 59 1841 1.29%
17 5 165 3.60% 3 122 4.17% 3 110 3.51% 3644 112949 79.30%
18 6 201 4.38% 4 148 5.06% 3 123 3.93% 43 1330 0.93%
19 3 110 2.40% 2 74 2.53% 2 87 2.78% 16 498 0.35%
20 4 127 2.77% 3 104 3.55% 2 78 2.49% 28 877 0.62%
21 6 196 4.28% 4 127 4.34% 4 140 4.47% 27 828 0.58%
22 4 124 2.71% 1 61 2.08% 3 110 3.51% 13 397 0.28%
23 4 146 3.18% 2 79 2.70% 3 114 3.64% 17 533 0.37%

Top 50 of 108 Total URLs
# Hits KBytes URL
1 1499 32.70% 7630 5.36% /
2 316 6.89% 2967 2.08% /images/logo/AOGFG_Bobbys_logo150pxHighHorizontalColor.gif
3 265 5.78% 189 0.13% /_vti_bin/fpcount.exe/
4 226 4.93% 5075 3.56% /images/prototypes/AOGFG_prototype10_trans_rd.jpg
5 210 4.58% 344 0.24% /favicon.ico
6 65 1.42% 43 0.03% /Introduction/_vti_bin/fpcount.exe/Introduction/
7 64 1.40% 217 0.15% /_vti_bin/shtml.exe/
8 52 1.13% 362 0.25% /Introduction/
9 50 1.09% 430 0.30% /Introduction/images/logo/AOGFG_Bobbys_logo150pxHighHorizontalColor.gif
10 49 1.07% 426 0.30% /Introduction/images/Bobby/Bobby_Amarasingam_with_proto11_Sept2_2011_blurred_300.jpg
11 33 0.72% 2005 1.41% /NDA_AOGFG.rtf
12 15 0.33% 118 0.08% /Inertial_Generator/Under_NDA/_vti_bin/_vti_aut/author.exe
13 14 0.31% 8 0.01% /Inertial_Generator/Under_NDA/_vti_bin/fpcount.exe/Inertial_Generator/Under_NDA/
14 6 0.13% 2 0.00% /_vti_bin/shtml.exe/_vti_rpc
15 6 0.13% 1 0.00% /home.htm
16 5 0.11% 5 0.00% /Introduction/images/
17 5 0.11% 11 0.01% /_vti_bin/_vti_aut/author.exe
18 4 0.09% 67 0.05% /Inertial_Generator/Under_NDA/
19 4 0.09% 37 0.03% /Inertial_Generator/Under_NDA/images/Newton_centripetal-force-is-free_150h.jpg
20 4 0.09% 85 0.06% /Inertial_Generator/Under_NDA/images/logo/header/AOGFG_Bobbys_logo_Final_header-150pxhigh.jpg
21 4 0.09% 1 0.00% /Inertial_Generator/Under_NDA/images/navigation/blank.gif
22 4 0.09% 6 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/Bottom_text_90x50_rd.jpg
23 4 0.09% 2 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/bottom_12x50_rd.jpg
24 4 0.09% 3 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/bottom_80x12_rd.jpg
25 4 0.09% 3 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/bottom_right_corner_42x50_rd.jpg
26 4 0.09% 3 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/left_8x100_rd.jpg
27 4 0.09% 3 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/left_8x150_rd.jpg
28 4 0.09% 3 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/right_12x100_rd.jpg
29 4 0.09% 2 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/right_12x8_rd.jpg
30 4 0.09% 4 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/right_spacer_9x9.jpg
31 4 0.09% 3 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/top-left_158_rd.jpg
32 4 0.09% 3 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/top_150x8_rd.jpg
33 4 0.09% 3 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/top_bottom_left_corer_23x40_rd.jpg
34 4 0.09% 2 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/top_bottom_left_corner_right_23x5_rd_rd.jpg
35 4 0.09% 3 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/top_right_bottom_round-corner_32x31_rd.jpg
36 4 0.09% 2 0.00% /Inertial_Generator/Under_NDA/working/borders/edges/top_right_corner_12x8_rd.jpg
37 3 0.07% 8 0.01% /Inertial_Generator/Under_NDA/Bobby_Amarasingam_Biography/April26/April_26_header_200.jpg
38 3 0.07% 6 0.00% /Inertial_Generator/Under_NDA/Contest/first_prize_95w.jpg
39 3 0.07% 11 0.01% /Inertial_Generator/Under_NDA/News/new_extra_paper-boy_125.jpg
40 3 0.07% 63 0.04% /Inertial_Generator/Under_NDA/images/prototypes/IMGA0085_AOGFG_proto11_back_600_200_125.jpg
41 3 0.07% 4 0.00% /Introduction/images/Bobby/
42 3 0.07% 1 0.00% /icons/back.gif
43 3 0.07% 1 0.00% /icons/blank.gif
44 3 0.07% 2 0.00% /icons/image2.gif
45 3 0.07% 45 0.03% /images/Bobby/Bobby_Amarasingam_with_proto11_Sept2_2011_400.jpg
46 2 0.04% 7 0.00% /Inertial_Generator/Under_NDA/Bobby_Amarasingam_Biography/AOGFG_generator_screengrab_crop_95x95.jpg
47 2 0.04% 5 0.00% /Inertial_Generator/Under_NDA/Bobby_Amarasingam_Biography/Bobby_Amarasingham_Water_Propulsion_Technology_sq_95x95.jpg
48 2 0.04% 12 0.01% /Inertial_Generator/Under_NDA/Costs/250-kW/250-kW_Inertial-Generator_costs_300.jpg
49 2 0.04% 72 0.05% /Inertial_Generator/Under_NDA/Latest/
50 2 0.04% 42 0.03% /Inertial_Generator/Under_NDA/Photos/Prototype11/IMGA0023_AOGFG_proto11_5kW_side_200.jpg
View All URLs

Top 10 of 108 Total URLs By KBytes
# Hits KBytes URL
1 1 0.02% 112128 78.72% /Inertial_Generator/Under_NDA/Videos/110827_Alan_witnesses_Bobbys_demo_10x_OU_100w-in_1030w-out.mp4
2 1 0.02% 8294 5.82% /Inertial_Generator/Under_NDA/Videos/110823_105w-in_1100w-out_brief.wmv
3 1499 32.70% 7630 5.36% /
4 226 4.93% 5075 3.56% /images/prototypes/AOGFG_prototype10_trans_rd.jpg
5 316 6.89% 2967 2.08% /images/logo/AOGFG_Bobbys_logo150pxHighHorizontalColor.gif
6 33 0.72% 2005 1.41% /NDA_AOGFG.rtf
7 50 1.09% 430 0.30% /Introduction/images/logo/AOGFG_Bobbys_logo150pxHighHorizontalColor.gif
8 49 1.07% 426 0.30% /Introduction/images/Bobby/Bobby_Amarasingam_with_proto11_Sept2_2011_blurred_300.jpg
9 52 1.13% 362 0.25% /Introduction/
10 210 4.58% 344 0.24% /favicon.ico

Top 16 of 16 Total Entry Pages
# Hits Visits URL
1 1499 32.70% 1126 91.17% /
2 52 1.13% 31 2.51% /Introduction/
3 265 5.78% 28 2.27% /_vti_bin/fpcount.exe/
4 64 1.40% 16 1.30% /_vti_bin/shtml.exe/
5 4 0.09% 14 1.13% /Inertial_Generator/Under_NDA/
6 6 0.13% 6 0.49% /home.htm
7 65 1.42% 4 0.32% /Introduction/_vti_bin/fpcount.exe/Introduction/
8 1 0.02% 2 0.16% /Inertial_Generator/Under_NDA/News/Newsletter/
9 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/Bobby_Amarasingam_Biography/
10 2 0.04% 1 0.08% /Inertial_Generator/Under_NDA/Latest/
11 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/News/
12 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/Overview/
13 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/Patents/
14 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/Upcoming/
15 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/Videos/
16 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/Witnesses/

Top 17 of 17 Total Exit Pages
# Hits Visits URL
1 1499 32.70% 953 77.04% /
2 265 5.78% 155 12.53% /_vti_bin/fpcount.exe/
3 65 1.42% 49 3.96% /Introduction/_vti_bin/fpcount.exe/Introduction/
4 52 1.13% 34 2.75% /Introduction/
5 4 0.09% 27 2.18% /Inertial_Generator/Under_NDA/
6 14 0.31% 4 0.32% /Inertial_Generator/Under_NDA/_vti_bin/fpcount.exe/Inertial_Generator/Under_NDA/
7 6 0.13% 4 0.32% /home.htm
8 64 1.40% 2 0.16% /_vti_bin/shtml.exe/
9 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/Bobby_Amarasingam_Biography/
10 2 0.04% 1 0.08% /Inertial_Generator/Under_NDA/Latest/
11 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/News/
12 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/News/Newsletter/
13 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/Overview/
14 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/Patents/
15 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/Upcoming/
16 1 0.02% 1 0.08% /Inertial_Generator/Under_NDA/Videos/
17 2 0.04% 1 0.08% /Introduction/images/prototypes/

Top 30 of 793 Total Sites
# Hits Files KBytes Visits Hostname
1 335 7.31% 84 2.87% 617 0.43% 34 2.61% 93.158.147.8
2 137 2.99% 4 0.14% 70 0.05% 2 0.15% 64.34.163.50
3 117 2.55% 98 3.35% 120982 84.94% 2 0.15% 64.77.249.170
4 115 2.51% 115 3.93% 636 0.45% 50 3.83% 92.39.50.53
5 104 2.27% 0 0.00% 19 0.01% 1 0.08% 65.111.177.228
6 84 1.83% 75 2.56% 490 0.34% 4 0.31% 77.104.214.150
7 79 1.72% 0 0.00% 30 0.02% 1 0.08% 218.202.102.86
8 73 1.59% 1 0.03% 34 0.02% 60 4.60% 123.126.50.81
9 73 1.59% 50 1.71% 418 0.29% 1 0.08% 77.77.129.128
10 69 1.51% 46 1.57% 264 0.19% 3 0.23% 79.103.45.14
11 68 1.48% 53 1.81% 162 0.11% 12 0.92% 81.182.251.112
12 66 1.44% 65 2.22% 491 0.34% 1 0.08% 180.188.165.226
13 62 1.35% 0 0.00% 24 0.02% 2 0.15% 216.24.240.138
14 60 1.31% 60 2.05% 332 0.23% 30 2.30% 92.249.127.111
15 55 1.20% 31 1.06% 583 0.41% 5 0.38% 78.141.17.73
16 45 0.98% 36 1.23% 364 0.26% 6 0.46% 186.113.186.219
17 45 0.98% 18 0.62% 116 0.08% 8 0.61% 95.108.151.244
18 43 0.94% 16 0.55% 102 0.07% 22 1.69% 199.21.99.96
19 41 0.89% 41 1.40% 227 0.16% 19 1.46% 109.120.157.179
20 40 0.87% 0 0.00% 15 0.01% 1 0.08% 116.126.127.217
21 40 0.87% 0 0.00% 15 0.01% 1 0.08% 117.16.35.10
22 40 0.87% 0 0.00% 15 0.01% 1 0.08% 202.29.34.28
23 40 0.87% 0 0.00% 15 0.01% 1 0.08% 79.99.195.214
24 39 0.85% 0 0.00% 15 0.01% 1 0.08% 200.206.117.5
25 35 0.76% 1 0.03% 19 0.01% 4 0.31% 64.127.117.99
26 33 0.72% 0 0.00% 13 0.01% 1 0.08% 80.188.162.154
27 33 0.72% 24 0.82% 233 0.16% 5 0.38% 81.205.159.46
28 30 0.65% 0 0.00% 11 0.01% 0 0.00% 213.186.127.3
29 28 0.61% 28 0.96% 155 0.11% 5 0.38% 72.167.159.5
30 28 0.61% 28 0.96% 155 0.11% 1 0.08% 78.46.128.119

Top 10 of 793 Total Sites By KBytes
# Hits Files KBytes Visits Hostname
1 117 2.55% 98 3.35% 120982 84.94% 2 0.15% 64.77.249.170
2 115 2.51% 115 3.93% 636 0.45% 50 3.83% 92.39.50.53
3 335 7.31% 84 2.87% 617 0.43% 34 2.61% 93.158.147.8
4 55 1.20% 31 1.06% 583 0.41% 5 0.38% 78.141.17.73
5 66 1.44% 65 2.22% 491 0.34% 1 0.08% 180.188.165.226
6 84 1.83% 75 2.56% 490 0.34% 4 0.31% 77.104.214.150
7 73 1.59% 50 1.71% 418 0.29% 1 0.08% 77.77.129.128
8 45 0.98% 36 1.23% 364 0.26% 6 0.46% 186.113.186.219
9 60 1.31% 60 2.05% 332 0.23% 30 2.30% 92.249.127.111
10 69 1.51% 46 1.57% 264 0.19% 3 0.23% 79.103.45.14

Top 20 of 213 Total Referrers
# Hits Referrer
1 2627 57.31% - (Direct Request)
2 548 11.95% http://aogfg.com/
3 180 3.93% http://www.aogfg.com/Introduction/index.html
4 171 3.73% http://aogfg.com/_vti_bin/shtml.exe/index.html
5 96 2.09% http://www.x-faq.ru/index.php?topic=1392.0
6 65 1.42% http://flhelp.ru/
7 63 1.37% http://peswiki.com/index.php/Directory:Alpha_Omega_Galaxy_Freefall_Generator_(AOGFG)
8 59 1.29% http://www.aogfg.com/Inertial_Generator/Under_NDA/Latest/
9 55 1.20% http://www.aogfg.com/_vti_bin/shtml.exe/index.html
10 48 1.05% http://www.aogfg.com/Inertial_Generator/Under_NDA/
11 45 0.98% http://www.aogfg.com/
12 33 0.72% http://x-faq.ru/index.php?topic=1392.0
13 22 0.48% http://www.aogfg.com/Introduction/
14 18 0.39% http://www.aogfg.com/Inertial_Generator/Under_NDA/Latest/index.html
15 16 0.35% http://0027.ru/
16 13 0.28% http://v.sokolovsky.com.ua/
17 13 0.28% http://www.aogfg.com/Introduction/images/Bobby/
18 12 0.26% http://ra-1.ru/
19 12 0.26% http://www.aogfg.com/Inertial_Generator/Under_NDA/Bobby_Amarasingam_Biography/index.html
20 12 0.26% http://www.orma-mebel.ru/
View All Referrers

Top 4 of 4 Total Search Strings
# Hits Search String
1 43 87.76% aogfg
2 3 6.12% aogfg.com
3 2 4.08% pure energy systems
4 1 2.04% pin it aogfg

Top 15 of 302 Total User Agents
# Hits User Agent
1 425 9.27% Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)
2 400 8.73% Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)
3 227 4.95% Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/13.0.782.220 Safari/535.1
4 148 3.23% Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
5 143 3.12% Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
6 121 2.64% Mozilla/5.0 (compatible; YodaoBot/1.0; http://www.yodao.com/help/webmaster/spider/; )
7 113 2.47% Mozilla/5.0 (Windows NT 5.1; rv:10.0.2) Gecko/20100101 Firefox/10.0.2
8 104 2.27% Jorgee
9 99 2.16% Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.52.7 (KHTML, like Gecko) Version/5.1.2 Safari/534.52.7
10 89 1.94% Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)
11 84 1.83% ZmEu
12 78 1.70% Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)
13 68 1.48% Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.46 Safari/535.11
14 68 1.48% Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)
15 62 1.35% Mozilla/5.0 (Bot clicker, Sait perser 3.2.73;)

Usage by Country for March 2012

Top 1 of 1 Total Countries
# Hits Files KBytes Country
1 4584 100.00% 2928 100.07% 142437 100.00% Unresolved/Unknown


Generated by Webalizer Version 2.21