datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,02 0:30:00,28 ,       0,1.812924, 0.50603,0.682334
sgpcmbeC1.c1,2005,02 1:30:00,28 ,       0,1.726526,0.309784, 0.54257
sgpcmbeC1.c1,2005,02 2:30:00,28 ,       0,1.566303,0.284995,0.543896
sgpcmbeC1.c1,2005,02 3:30:00,28 ,       0,1.779946,0.220324,0.517663
sgpcmbeC1.c1,2005,02 4:30:00,28 ,       0,1.623182,0.220683,0.466251
sgpcmbeC1.c1,2005,02 5:30:00,28 ,       0,1.432472,0.191686,0.433543
sgpcmbeC1.c1,2005,02 6:30:00,28 ,       0,1.748588,0.223433,0.559565
sgpcmbeC1.c1,2005,02 7:30:00,28 ,1.902665,47.15474,18.27351, 12.4556
sgpcmbeC1.c1,2005,02 8:30:00,28 ,3.350853,79.60194,37.30006,24.32098
sgpcmbeC1.c1,2005,02 9:30:00,28 ,3.994995,145.4952,47.42567,31.17585
sgpcmbeC1.c1,2005,0210:30:00,28 , 6.86814,135.4684,48.15476,33.30623
sgpcmbeC1.c1,2005,0211:30:00,28 ,8.251987,178.2714,45.14914,39.94304
sgpcmbeC1.c1,2005,0212:30:00,28 ,4.179001,222.5935,51.11853,56.61622
sgpcmbeC1.c1,2005,0213:30:00,28 ,11.62005, 222.776,46.90529,52.87735
sgpcmbeC1.c1,2005,0214:30:00,28 ,4.927952,241.9537,54.56672,56.41457
sgpcmbeC1.c1,2005,0215:30:00,28 ,5.750129,193.9508,55.96085,44.71882
sgpcmbeC1.c1,2005,0216:30:00,28 ,3.846194,145.1411,44.88719,30.97844
sgpcmbeC1.c1,2005,0217:30:00,28 ,2.873242,62.52803,31.30462,21.03438
sgpcmbeC1.c1,2005,0218:30:00,28 ,       0, 15.2273,3.530849,3.623576
sgpcmbeC1.c1,2005,0219:30:00,28 ,       0,1.744692,0.377238,0.604564
sgpcmbeC1.c1,2005,0220:30:00,28 ,       0,1.730651,0.468403,0.690859
sgpcmbeC1.c1,2005,0221:30:00,28 ,       0,1.857931,0.453311,  0.7477
sgpcmbeC1.c1,2005,0222:30:00,28 ,       0,2.040583,0.508325,0.753716
sgpcmbeC1.c1,2005,0223:30:00,28 ,       0,1.905169,0.263986,0.560425