datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,11 0:30:00,26 ,       0,0.036071,0.003701,0.010225
sgpcmbeC1.c1,2001,11 1:30:00,26 ,       0,0.107655,0.010311,0.028074
sgpcmbeC1.c1,2001,11 2:30:00,27 ,       0,0.048122,0.002914,0.009769
sgpcmbeC1.c1,2001,11 3:30:00,27 ,       0,0.054507,0.002757, 0.01103
sgpcmbeC1.c1,2001,11 4:30:00,28 ,       0,0.037221,0.001329,0.007034
sgpcmbeC1.c1,2001,11 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,11 6:30:00,30 ,       0,0.270118,0.084278, 0.10576
sgpcmbeC1.c1,2001,11 7:30:00,30 ,0.127066,31.97965,9.850321,11.46796
sgpcmbeC1.c1,2001,11 8:30:00,30 ,0.002224,174.9791, 70.0931,65.13991
sgpcmbeC1.c1,2001,11 9:30:00,30 ,       0,331.6883,153.0571,130.3549
sgpcmbeC1.c1,2001,1110:30:00,30 ,0.129929,453.4378, 209.154,181.8517
sgpcmbeC1.c1,2001,1111:30:00,30 ,0.184204,523.5046,256.8475,212.6559
sgpcmbeC1.c1,2001,1112:30:00,30 ,0.069267,540.3589,246.1493,212.9848
sgpcmbeC1.c1,2001,1113:30:00,30 ,0.048859,504.3569,208.8006,194.2445
sgpcmbeC1.c1,2001,1114:30:00,30 ,       0,407.9004,177.0444,155.1587
sgpcmbeC1.c1,2001,1115:30:00,30 ,0.009628,260.5226,103.9985,98.20767
sgpcmbeC1.c1,2001,1116:30:00,30 ,0.018051,92.55725,35.58038,34.59403
sgpcmbeC1.c1,2001,1117:30:00,30 , 0.21551,4.838363,1.342083,1.504488
sgpcmbeC1.c1,2001,1118:30:00,30 ,       0,0.712064,0.026163,0.129939
sgpcmbeC1.c1,2001,1119:30:00,30 ,       0,0.001123,0.000042,0.000206
sgpcmbeC1.c1,2001,1120:30:00,28 ,       0,0.036613,0.001346,0.006915
sgpcmbeC1.c1,2001,1121:30:00,28 ,       0,0.082177,  0.0036,0.015536
sgpcmbeC1.c1,2001,1122:30:00,26 ,       0,0.482733,0.023853,0.096279
sgpcmbeC1.c1,2001,1123:30:00,27 ,       0,0.059725,0.003759, 0.01179