datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,02 0:30:00,29 ,       0,0.118638, 0.00753,0.024989
sgpcmbeC1.c1,2004,02 1:30:00,28 ,       0,0.154154,0.009707,0.031536
sgpcmbeC1.c1,2004,02 2:30:00,29 ,       0,0.181134, 0.01264,0.038079
sgpcmbeC1.c1,2004,02 3:30:00,29 ,       0, 0.13796,0.007887,0.027771
sgpcmbeC1.c1,2004,02 4:30:00,29 ,       0,0.173653,0.008437,0.033551
sgpcmbeC1.c1,2004,02 5:30:00,29 ,       0,0.170535,0.009061, 0.03368
sgpcmbeC1.c1,2004,02 6:30:00,29 ,       0,0.153947,0.006421,0.028998
sgpcmbeC1.c1,2004,02 7:30:00,29 ,       0,14.69631,6.064164,4.605319
sgpcmbeC1.c1,2004,02 8:30:00,29 ,0.323952,38.28913,11.97887,9.948419
sgpcmbeC1.c1,2004,02 9:30:00,29 ,1.063281,53.65654,16.32764,13.44033
sgpcmbeC1.c1,2004,0210:30:00,29 ,1.614533,61.36878,16.81368,13.03233
sgpcmbeC1.c1,2004,0211:30:00,29 ,2.050126,70.94233,14.94549,17.20339
sgpcmbeC1.c1,2004,0212:30:00,29 ,0.579776,69.79096,14.34669,17.56805
sgpcmbeC1.c1,2004,0213:30:00,29 ,1.776117,72.97047,17.03284,18.20174
sgpcmbeC1.c1,2004,0214:30:00,29 ,0.904668, 70.0012,18.32348,16.84967
sgpcmbeC1.c1,2004,0215:30:00,29 ,0.385004,37.68185,17.69563,10.32689
sgpcmbeC1.c1,2004,0216:30:00,29 ,0.178617,34.82739,14.30903,8.991322
sgpcmbeC1.c1,2004,0217:30:00,29 ,       0,28.77904,11.91635,6.590353
sgpcmbeC1.c1,2004,0218:30:00,29 ,       0,3.811097,0.530218,0.841146
sgpcmbeC1.c1,2004,0219:30:00,29 ,       0,0.014147, 0.00053,0.002629
sgpcmbeC1.c1,2004,0220:30:00,29 ,       0,0.124133,0.004673,0.023073
sgpcmbeC1.c1,2004,0221:30:00,29 ,       0,0.101963,0.005353,0.019814
sgpcmbeC1.c1,2004,0222:30:00,29 ,       0,  0.0992,  0.0062,0.020451
sgpcmbeC1.c1,2004,0223:30:00,29 ,       0,0.097625,0.004747,0.018656