datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2000,04 0:30:00,30 ,       0,0.029447,0.000982,0.005376
sgpcmbeC1.c1,2000,04 1:30:00,30 ,       0,0.019788, 0.00066,0.003613
sgpcmbeC1.c1,2000,04 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,04 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,04 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,04 5:30:00,30 ,       0,0.454463,0.088206,0.152954
sgpcmbeC1.c1,2000,04 6:30:00,27 ,0.034985,24.62708,11.49621,7.702142
sgpcmbeC1.c1,2000,04 7:30:00,25 ,1.156435,68.98148,37.50664,19.95816
sgpcmbeC1.c1,2000,04 8:30:00,25 ,6.921355,107.2413,67.75299,31.45545
sgpcmbeC1.c1,2000,04 9:30:00,26 ,5.975546, 134.757,98.52291,38.08397
sgpcmbeC1.c1,2000,0410:30:00,24 ,8.587472,152.7834,116.7839,45.35927
sgpcmbeC1.c1,2000,0411:30:00,24 ,8.903388,164.2747,126.8685,46.01289
sgpcmbeC1.c1,2000,0412:30:00,24 ,13.42558,165.8488,137.3071,41.09851
sgpcmbeC1.c1,2000,0413:30:00,25 , 6.89759,  165.07,130.4055,46.61618
sgpcmbeC1.c1,2000,0414:30:00,23 ,21.42797,154.4663,123.7774,34.30683
sgpcmbeC1.c1,2000,0415:30:00,24 ,       0,137.3237,95.09304,41.59441
sgpcmbeC1.c1,2000,0416:30:00,24 ,       0,107.0332,66.42574,36.21953
sgpcmbeC1.c1,2000,0417:30:00,25 ,       0,68.19839,42.77065,21.06909
sgpcmbeC1.c1,2000,0418:30:00,27 ,       0,22.63269,12.84386,6.583036
sgpcmbeC1.c1,2000,0419:30:00,30 ,       0,0.252379,0.031678,0.071201
sgpcmbeC1.c1,2000,0420:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,0421:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,0422:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,0423:30:00,30 ,       0,       0,       0,       0