datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,12 0:30:00,31 ,       0,2.145475,1.050103,0.673724
sgpcmbeC1.c1,2004,12 1:30:00,31 ,       0,2.469413,1.158864,0.726616
sgpcmbeC1.c1,2004,12 2:30:00,31 ,       0, 2.32874,0.942891,0.769024
sgpcmbeC1.c1,2004,12 3:30:00,31 ,       0,2.368045,1.083787,0.711401
sgpcmbeC1.c1,2004,12 4:30:00,31 ,       0,2.257881,1.078948,0.626999
sgpcmbeC1.c1,2004,12 5:30:00,31 ,0.100631,2.149947,1.227238,0.600872
sgpcmbeC1.c1,2004,12 6:30:00,31 ,0.335252,2.440983,1.544349,0.499351
sgpcmbeC1.c1,2004,12 7:30:00,31 ,0.735328,11.31749,3.453782,2.785548
sgpcmbeC1.c1,2004,12 8:30:00,31 ,0.087873,131.3453,  65.046,43.20904
sgpcmbeC1.c1,2004,12 9:30:00,31 ,0.218678,293.7093, 158.399,103.7198
sgpcmbeC1.c1,2004,1210:30:00,31 ,0.157204,423.4925, 257.652,152.7058
sgpcmbeC1.c1,2004,1211:30:00,31 , 0.01141,499.6411,325.1818,183.0681
sgpcmbeC1.c1,2004,1212:30:00,31 ,0.136841,518.0624,336.9471,195.3318
sgpcmbeC1.c1,2004,1213:30:00,31 ,0.542358,471.5549,334.7746,166.6381
sgpcmbeC1.c1,2004,1214:30:00,31 ,0.026011,377.6514,251.6226,141.9329
sgpcmbeC1.c1,2004,1215:30:00,31 ,       0,238.6678,151.3284,87.52414
sgpcmbeC1.c1,2004,1216:30:00,31 ,0.000023,81.64768,45.86897,30.85724
sgpcmbeC1.c1,2004,1217:30:00,31 ,0.186544,3.199408,1.529269,0.675861
sgpcmbeC1.c1,2004,1218:30:00,31 , 0.77151,2.323136,1.686836,0.431551
sgpcmbeC1.c1,2004,1219:30:00,31 ,0.354385,2.402069,1.704646, 0.49576
sgpcmbeC1.c1,2004,1220:30:00,31 ,0.602753,2.434098,1.574269,0.493574
sgpcmbeC1.c1,2004,1221:30:00,31 ,       0, 2.44048,1.452233,0.712154
sgpcmbeC1.c1,2004,1222:30:00,31 ,       0,2.474534,1.404012,0.731879
sgpcmbeC1.c1,2004,1223:30:00,31 ,       0,2.189973,1.183132,0.695777