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 ,       0,17.44942,1.691716, 4.11409
sgpcmbeC1.c1,2004,03 7:30:00,31 ,       0,167.3892,49.34027,50.14721
sgpcmbeC1.c1,2004,03 8:30:00,31 ,0.021471,373.3138,158.8397,131.6827
sgpcmbeC1.c1,2004,03 9:30:00,31 ,0.064117,558.5381,  276.68,218.9299
sgpcmbeC1.c1,2004,0310:30:00,31 ,0.321528,691.3768, 366.123,283.3266
sgpcmbeC1.c1,2004,0311:30:00,31 ,0.104775,786.2247,435.6451,326.9802
sgpcmbeC1.c1,2004,0312:30:00,31 ,0.145847,835.8229,478.4172,  336.73
sgpcmbeC1.c1,2004,0313:30:00,31 ,0.037716,796.9675,463.5973,309.0687
sgpcmbeC1.c1,2004,0314:30:00,31 ,0.168205,687.1669, 405.195,274.9728
sgpcmbeC1.c1,2004,0315:30:00,31 ,0.225925, 552.526, 295.788, 229.181
sgpcmbeC1.c1,2004,0316:30:00,31 ,0.038876,372.9817,181.5904,147.7909
sgpcmbeC1.c1,2004,0317:30:00,31 ,0.011866,173.7497, 77.4152,64.18671
sgpcmbeC1.c1,2004,0318:30:00,31 ,       0,23.70326,6.963975,7.403258
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