major version minor version webkit version        operating system        release date                                       features
0      safari 3         3.1.1         525.17      windows xp , vista     april 16 , 2008  improved stability and added security updates
1      safari 3         3.1.2         525.21      windows xp , vista      june 19 , 2008  improved stability and added security updates
2      safari 3         3.2.1       525.27.1      windows xp , vista  november 24 , 2008                         stability improvements
3      safari 3         3.2.2       525.28.1      windows xp , vista  february 12 , 2009                               security updates
4      safari 3         3.2.3       525.29.1      windows xp , vista       may 12 , 2009                               security updates
5      safari 4           4.0         528.17      windows xp , vista       may 12 , 2009            public beta latest security updates
6      safari 5         5.0.5       533.21.1  windows xp , vista , 7     april 14 , 2011                                security update

Table as JSON:
{"major version":{"0":"safari 3","1":"safari 3","2":"safari 3","3":"safari 3","4":"safari 3","5":"safari 4","6":"safari 5"},"minor version":{"0":"3.1.1","1":"3.1.2","2":"3.2.1","3":"3.2.2","4":"3.2.3","5":"4.0","6":"5.0.5"},"webkit version":{"0":"525.17","1":"525.21","2":"525.27.1","3":"525.28.1","4":"525.29.1","5":"528.17","6":"533.21.1"},"operating system":{"0":"windows xp , vista","1":"windows xp , vista","2":"windows xp , vista","3":"windows xp , vista","4":"windows xp , vista","5":"windows xp , vista","6":"windows xp , vista , 7"},"release date":{"0":"april 16 , 2008","1":"june 19 , 2008","2":"november 24 , 2008","3":"february 12 , 2009","4":"may 12 , 2009","5":"may 12 , 2009","6":"april 14 , 2011"},"features":{"0":"improved stability and added security updates","1":"improved stability and added security updates","2":"stability improvements","3":"security updates","4":"security updates","5":"public beta latest security updates","6":"security update"}}