datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,09 0:30:00,30 ,       0,1.053039,0.035101,0.192258
sgpcmbeC1.c1,2003,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 3:30:00,30 ,       0,0.927199,0.045577,0.184866
sgpcmbeC1.c1,2003,09 4:30:00,29 ,       0,0.905753,0.054821, 0.20712
sgpcmbeC1.c1,2003,09 5:30:00,29 ,       0,1.246472,0.057257,0.241276
sgpcmbeC1.c1,2003,09 6:30:00,30 ,0.816523,53.32036,23.98795,14.54536
sgpcmbeC1.c1,2003,09 7:30:00,30 ,3.020915,106.5278, 49.7848,26.91637
sgpcmbeC1.c1,2003,09 8:30:00,30 ,11.91982,162.8081,61.39756,42.84557
sgpcmbeC1.c1,2003,09 9:30:00,30 ,4.828291, 210.841,63.62855, 45.4839
sgpcmbeC1.c1,2003,0910:30:00,30 ,12.80204, 234.989,70.19055,51.78412
sgpcmbeC1.c1,2003,0911:30:00,30 ,14.72915,296.9875,72.30001,66.53452
sgpcmbeC1.c1,2003,0912:30:00,30 ,3.436749,280.1219,74.19859,83.33123
sgpcmbeC1.c1,2003,0913:30:00,30 ,7.272125,251.6253, 82.5456,74.06241
sgpcmbeC1.c1,2003,0914:30:00,30 ,7.489882,224.3683,94.33894,72.17893
sgpcmbeC1.c1,2003,0915:30:00,30 ,6.206937,185.3624,84.10147,45.53874
sgpcmbeC1.c1,2003,0916:30:00,30 ,7.152165,114.2356,61.32831,27.70921
sgpcmbeC1.c1,2003,0917:30:00,30 ,2.198502,99.83318,51.83696, 21.0992
sgpcmbeC1.c1,2003,0918:30:00,30 ,       0,55.36435,19.81554,14.34138
sgpcmbeC1.c1,2003,0919:30:00,30 ,       0,1.598693,0.274321,0.506507
sgpcmbeC1.c1,2003,0920:30:00,30 ,       0,    1.61,0.146411,0.402907
sgpcmbeC1.c1,2003,0921:30:00,30 ,       0,1.738479,0.131532,0.388258
sgpcmbeC1.c1,2003,0922:30:00,30 ,       0,1.523742,0.214171,0.496178
sgpcmbeC1.c1,2003,0923:30:00,30 ,       0, 1.57841,0.164497,0.452148