datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,02 0:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 1:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 2:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 3:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 4:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 5:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 6:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 7:30:00,28 ,0.047583,32.67594, 8.02827,9.875533
sgpcmbeC1.c1,2006,02 8:30:00,28 ,0.053454,86.95867,38.51403,24.98911
sgpcmbeC1.c1,2006,02 9:30:00,28 ,0.151509,123.4613,46.12989,33.57285
sgpcmbeC1.c1,2006,0210:30:00,28 ,0.277987,170.8395,50.56155,42.90381
sgpcmbeC1.c1,2006,0211:30:00,28 ,0.219799, 183.472,58.38908,62.03354
sgpcmbeC1.c1,2006,0212:30:00,28 ,0.601083,197.3906,51.44657,63.92944
sgpcmbeC1.c1,2006,0213:30:00,28 ,0.477462,171.0785,58.64484, 58.5579
sgpcmbeC1.c1,2006,0214:30:00,28 ,0.322345,146.8101,58.53662,44.45183
sgpcmbeC1.c1,2006,0215:30:00,28 ,0.253112,136.3513, 52.2824,29.42926
sgpcmbeC1.c1,2006,0216:30:00,28 ,0.149605,111.0659,45.56532,25.78293
sgpcmbeC1.c1,2006,0217:30:00,28 ,0.023924,46.69586,24.81745,16.47626
sgpcmbeC1.c1,2006,0218:30:00,26 ,       0,5.801121,1.388885,1.603515
sgpcmbeC1.c1,2006,0219:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0220:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0221:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0222:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0223:30:00,15 ,       0,       0,       0,       0