datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,03 0:30:00,29 ,       0,2.481373,1.163739,0.895858
sgpcmbeC1.c1,2004,03 1:30:00,29 ,       0,2.225596,1.085578, 0.84753
sgpcmbeC1.c1,2004,03 2:30:00,30 ,       0, 2.40384,1.065066,0.823893
sgpcmbeC1.c1,2004,03 3:30:00,31 ,       0,2.948816,1.033544,0.828396
sgpcmbeC1.c1,2004,03 4:30:00,30 ,       0, 2.47843,0.979329,0.852352
sgpcmbeC1.c1,2004,03 5:30:00,30 ,       0,2.548109,1.090373,0.844023
sgpcmbeC1.c1,2004,03 6:30:00,31 ,       0,30.25872,5.821497,7.256688
sgpcmbeC1.c1,2004,03 7:30:00,31 ,0.161792,206.8305,85.78262,57.08076
sgpcmbeC1.c1,2004,03 8:30:00,31 ,4.845569,426.6478, 235.908,127.6947
sgpcmbeC1.c1,2004,03 9:30:00,31 ,4.671914,621.4708,383.2903,  206.38
sgpcmbeC1.c1,2004,0310:30:00,31 ,23.73079,774.6076,500.1219,263.6942
sgpcmbeC1.c1,2004,0311:30:00,31 ,43.57729,874.6112,584.9984,293.8534
sgpcmbeC1.c1,2004,0312:30:00,31 ,33.70515,910.4871,644.0317,292.1638
sgpcmbeC1.c1,2004,0313:30:00,31 ,33.59026,878.3341,649.6661,254.7729
sgpcmbeC1.c1,2004,0314:30:00,31 ,25.09345,786.7394,570.2262,233.3412
sgpcmbeC1.c1,2004,0315:30:00,31 , 9.74069,634.6287, 431.579,193.3364
sgpcmbeC1.c1,2004,0316:30:00,31 ,29.96119,444.4529,281.9205,137.1176
sgpcmbeC1.c1,2004,0317:30:00,31 ,7.189334,226.6852,133.0469,66.18851
sgpcmbeC1.c1,2004,0318:30:00,31 ,0.268544,43.33538,17.02624,10.70302
sgpcmbeC1.c1,2004,0319:30:00,31 ,       0,2.552998,0.853054,  0.9825
sgpcmbeC1.c1,2004,0320:30:00,31 ,       0,2.839411,1.010534,1.014907
sgpcmbeC1.c1,2004,0321:30:00,31 ,       0,2.675495,1.073072, 0.92484
sgpcmbeC1.c1,2004,0322:30:00,31 ,       0,2.784597,1.084992,0.919617
sgpcmbeC1.c1,2004,0323:30:00,29 ,       0,2.762275,1.112277,0.883091