datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,02 0:30:00,11 ,       0,0.289638,0.026747,0.087202
sgpcmbeC1.c1,2002,02 1:30:00,12 ,       0,0.361251,0.047948, 0.11267
sgpcmbeC1.c1,2002,02 2:30:00,12 ,       0,0.154582,0.015181,0.044227
sgpcmbeC1.c1,2002,02 3:30:00,11 ,       0,0.179547,0.016322,0.054135
sgpcmbeC1.c1,2002,02 4:30:00,13 ,       0,0.084506,0.007355,0.023383
sgpcmbeC1.c1,2002,02 5:30:00,16 ,       0,0.081919, 0.00512, 0.02048
sgpcmbeC1.c1,2002,02 6:30:00,18 ,       0,0.311654,0.039733,0.084405
sgpcmbeC1.c1,2002,02 7:30:00,18 ,7.756094,68.28002,34.06462,18.02903
sgpcmbeC1.c1,2002,02 8:30:00,18 ,66.09024,266.7496,182.0046,61.34775
sgpcmbeC1.c1,2002,02 9:30:00,18 ,137.7502,473.5542,   356.2,98.62806
sgpcmbeC1.c1,2002,0210:30:00,18 ,221.5601,642.6926,516.7906,126.7221
sgpcmbeC1.c1,2002,0211:30:00,18 , 407.109,755.1154,632.7252,106.0705
sgpcmbeC1.c1,2002,0212:30:00,18 ,418.3476,800.8586, 659.669,122.2648
sgpcmbeC1.c1,2002,0213:30:00,18 ,368.7335, 783.197,639.5564,124.3688
sgpcmbeC1.c1,2002,0214:30:00,18 , 395.597,693.2883,604.1051,68.48257
sgpcmbeC1.c1,2002,0215:30:00,18 ,252.6534,543.9294,456.7511,80.48161
sgpcmbeC1.c1,2002,0216:30:00,19 ,50.69415,355.7509,264.9193,83.68943
sgpcmbeC1.c1,2002,0217:30:00,19 ,19.96729,143.2561,89.54368,35.40582
sgpcmbeC1.c1,2002,0218:30:00,19 ,  0.4509,9.971152,4.170559,2.602104
sgpcmbeC1.c1,2002,0219:30:00,19 ,       0,1.053336,0.114961,0.271771
sgpcmbeC1.c1,2002,0220:30:00,19 ,       0,0.173532, 0.01306,0.042352
sgpcmbeC1.c1,2002,0221:30:00,17 ,       0,0.334982,0.021007,0.081033
sgpcmbeC1.c1,2002,0222:30:00,16 ,       0,0.372314,0.052394,0.113572
sgpcmbeC1.c1,2002,0223:30:00,16 ,       0,0.408396,0.035552,0.106459