Segue o array:
Array ( [0] => Array ( [usuario] => 22 [segundos] => 139 [tipo_historico] => 2 [data] => 2011-07-18 16:57:41 ) [1] => Array ( [usuario] => 22 [segundos] => 465 [tipo_historico] => 7 [data] => 2011-07-19 08:16:52 ) [2] => Array ( [usuario] => 22 [segundos] => 32 [tipo_historico] => 1 [data] => 2011-07-18 16:57:09 ) [3] => Array ( [usuario] => 22 [segundos] => 55012 [tipo_historico] => 6 [data] => 2011-07-18 17:00:00 ) [4] => Array ( [usuario] => 22 [segundos] => 2459 [tipo_historico] => 10 [data] => 2011-07-19 08:24:37 ) )