[['', 'spacecraft', 'spacewalkers', 'start ( utc )', 'end (utc)', 'duration'], ['341', 'expedition 26 eva 1', 'dmitri kondratyev oleg skripochka', 'january 21 , 2011 14:29', 'january 21 , 2011 19:52', '5 hours , 23 minutes'], ['342', 'expedition 26 eva 2', 'dmitri kondratyev oleg skripochka', 'february 16 , 2011 13:30', 'february 16 , 2011 18:21', '4 hours , 51 minutes'], ['343', 'sts - 133 eva 1', 'b alvin drew stephen bowen', 'february 28 , 2011 15:46', 'february 28 , 2011 22:20', '6 hours , 34 minutes'], ['344', 'sts - 133 eva 2', 'b alvin drew stephen bowen', 'march 2 , 2011 15:42', 'march 2 , 2011 21:56', '6 hours , 14 minutes'], ['345', 'sts - 134 eva 1', 'andrew j feustel gregory chamitoff', 'may 20 , 2011 07:10', 'may 20 , 2011 13:29', '6 hours , 19 minutes'], ['346', 'sts - 134 eva 2', 'andrew j feustel michael fincke', 'may 22 , 2011 06:05', 'may 22 , 2011 14:12', '8 hours , 7 minutes'], ['347', 'sts - 134 eva 3', 'andrew j feustel michael fincke', 'may 25 , 2011 05:43', 'may 25 , 2011 12:37', '6 hours , 54 minutes'], ['348', 'sts - 134 eva 4', 'michael fincke gregory chamitoff', 'may 27 , 2011 04:15', 'may 27 , 2011 11:39', '7 hours 24 minutes'], ['349', 'expedition 28 eva 1', 'ronald j garan , jr michael e fossum', 'july 12 , 2011 13:22', 'july 12 , 2011 19:53', '6 hours 31 minutes']]
most Spacewalks happened in May 2011
most [ENT] happened in [ENT]