datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,03 0:30:00,29 ,       0,0.050107,0.001728,0.009305
sgpcmbeC1.c1,2004,03 1:30:00,29 ,       0,0.213163, 0.00735,0.039583
sgpcmbeC1.c1,2004,03 2:30:00,30 ,       0,0.522282,  0.0344,0.130924
sgpcmbeC1.c1,2004,03 3:30:00,31 ,       0,1.055876,0.034061,0.189641
sgpcmbeC1.c1,2004,03 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 6:30:00,31 ,       0,30.09411,5.100657,7.410853
sgpcmbeC1.c1,2004,03 7:30:00,31 ,       0,206.8305,85.75271,57.11943
sgpcmbeC1.c1,2004,03 8:30:00,31 ,4.499918,426.6478,235.8968,127.7156
sgpcmbeC1.c1,2004,03 9:30:00,31 ,3.840581,621.4708,383.2635,206.4309
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 ,9.606035,634.6287,431.5747,193.3462
sgpcmbeC1.c1,2004,0316:30:00,31 ,29.96119,444.4529,281.9176,137.1228
sgpcmbeC1.c1,2004,0317:30:00,31 , 6.69866,226.6852,133.0173, 66.2446
sgpcmbeC1.c1,2004,0318:30:00,31 ,       0,43.25747,16.68249,10.74037
sgpcmbeC1.c1,2004,0319:30:00,31 ,       0,0.460426,0.039571,0.107027
sgpcmbeC1.c1,2004,0320:30:00,31 ,       0,0.768447,0.054437, 0.15692
sgpcmbeC1.c1,2004,0321:30:00,31 ,       0,0.202921,0.006546,0.036446
sgpcmbeC1.c1,2004,0322:30:00,31 ,       0,0.353315,0.016458,0.068568
sgpcmbeC1.c1,2004,0323:30:00,29 ,       0,0.974801,0.054564, 0.20082