datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,02 0:30:00,18 ,       0,0.361448,0.032246,0.089955
sgpcmbeC1.c1,2002,02 1:30:00,18 ,       0,0.088352,0.009418,0.027437
sgpcmbeC1.c1,2002,02 2:30:00,18 ,       0, 0.15296, 0.01467,0.037939
sgpcmbeC1.c1,2002,02 3:30:00,18 ,       0,0.120896,0.011411,0.029979
sgpcmbeC1.c1,2002,02 4:30:00,18 ,       0,0.033338, 0.00349,0.010178
sgpcmbeC1.c1,2002,02 5:30:00,18 ,       0,0.091426,0.005079,0.021549
sgpcmbeC1.c1,2002,02 6:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 7:30:00,18 ,1.395526,13.35739,6.982663,3.625709
sgpcmbeC1.c1,2002,02 8:30:00,18 ,2.852275,20.22576,12.10766, 4.18925
sgpcmbeC1.c1,2002,02 9:30:00,18 ,3.949184,30.35556,12.05717,6.560653
sgpcmbeC1.c1,2002,0210:30:00,18 ,6.531335,32.40525,13.95849,8.100669
sgpcmbeC1.c1,2002,0211:30:00,18 ,3.514915,37.92597,14.73346,11.69349
sgpcmbeC1.c1,2002,0212:30:00,18 ,0.375407,50.81597,12.84357,13.73338
sgpcmbeC1.c1,2002,0213:30:00,18 ,2.178571,34.04163,10.65331,9.764266
sgpcmbeC1.c1,2002,0214:30:00,18 , 3.58506,38.50111,12.05361,9.919419
sgpcmbeC1.c1,2002,0215:30:00,18 , 8.04743,32.83468,16.18394,8.943832
sgpcmbeC1.c1,2002,0216:30:00,19 ,5.085237,26.14652,13.64783,5.125256
sgpcmbeC1.c1,2002,0217:30:00,19 ,1.733212,16.18084,11.06939,3.735648
sgpcmbeC1.c1,2002,0218:30:00,19 ,       0,3.560947, 1.16139, 1.17138
sgpcmbeC1.c1,2002,0219:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0220:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0221:30:00,19 ,       0,0.062768,0.003304,  0.0144
sgpcmbeC1.c1,2002,0222:30:00,19 ,       0,0.110895,0.007455,0.025512
sgpcmbeC1.c1,2002,0223:30:00,19 ,       0,0.140321,0.013436, 0.04018