datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,01 0:30:00,31 ,       0,0.169209,0.007422,0.031604
sgpcmbeC1.c1,2003,01 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 2:30:00,31 ,       0,0.007574,0.000244, 0.00136
sgpcmbeC1.c1,2003,01 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 7:30:00,31 ,       0,  5.0475,1.961581,1.230024
sgpcmbeC1.c1,2003,01 8:30:00,31 ,1.311187,19.00595,11.16976,4.769233
sgpcmbeC1.c1,2003,01 9:30:00,31 ,1.654445,23.60805,  10.398,4.851415
sgpcmbeC1.c1,2003,0110:30:00,31 ,3.995177,29.03456,10.66411, 6.27815
sgpcmbeC1.c1,2003,0111:30:00,31 ,1.633253,39.72779,10.77689,10.16572
sgpcmbeC1.c1,2003,0112:30:00,31 ,0.432231,41.65343,8.681715,11.39545
sgpcmbeC1.c1,2003,0113:30:00,31 ,1.471353,50.18858,12.65981,14.82347
sgpcmbeC1.c1,2003,0114:30:00,31 ,1.167721,43.96124,11.90206,10.84901
sgpcmbeC1.c1,2003,0115:30:00,31 ,1.542781,24.60294,11.20344,5.533301
sgpcmbeC1.c1,2003,0116:30:00,31 ,1.742708,27.80957,12.41916,6.137691
sgpcmbeC1.c1,2003,0117:30:00,31 ,0.276507, 12.6952,5.050002,3.196059
sgpcmbeC1.c1,2003,0118:30:00,31 ,       0,0.051058,0.001647, 0.00917
sgpcmbeC1.c1,2003,0119:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0120:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0121:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0122:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0123:30:00,31 ,       0,0.152455,0.004918,0.027382