datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,11 0:30:00,4 ,3.435758,6.083107,4.949224, 1.28147
sgpcmbeC1.c1,2005,11 1:30:00,4 ,2.062382,6.553125,5.171371,2.088591
sgpcmbeC1.c1,2005,11 2:30:00,4 , 0.92098,6.802661,4.980832,2.754727
sgpcmbeC1.c1,2005,11 3:30:00,4 ,1.287716,7.362065,4.864545,2.560743
sgpcmbeC1.c1,2005,11 4:30:00,4 ,0.769421,8.061008,4.624312,3.196688
sgpcmbeC1.c1,2005,11 5:30:00,4 ,1.839277,8.335507,5.270095,3.060586
sgpcmbeC1.c1,2005,11 6:30:00,4 ,1.322502,8.101407,  4.5397,3.052227
sgpcmbeC1.c1,2005,11 7:30:00,4 ,2.569271,6.841809,4.023723,1.932247
sgpcmbeC1.c1,2005,11 8:30:00,5 ,1.630001,10.09694,4.757046,3.429119
sgpcmbeC1.c1,2005,11 9:30:00,9 , 0.00769,307.6835,42.42954,100.8604
sgpcmbeC1.c1,2005,1110:30:00,9 ,0.183504,272.1161,34.30116,89.22312
sgpcmbeC1.c1,2005,1111:30:00,8 ,0.506584,9.285871,4.636507,2.916403
sgpcmbeC1.c1,2005,1112:30:00,7 ,0.062968, 8.98817,4.503068,2.772199
sgpcmbeC1.c1,2005,1113:30:00,9 ,0.764564,262.3347,34.23036,85.61104
sgpcmbeC1.c1,2005,1114:30:00,8 ,0.500973,24.49736, 8.41386,7.539065
sgpcmbeC1.c1,2005,1115:30:00,9 ,1.941705,113.9368,20.45466, 35.4917
sgpcmbeC1.c1,2005,1116:30:00,8 ,3.174691,96.56728, 26.8523,37.36494
sgpcmbeC1.c1,2005,1117:30:00,7 , 6.08311,60.39779,22.84216,19.53637
sgpcmbeC1.c1,2005,1118:30:00,7 ,6.054406,46.61864,21.55235,17.70329
sgpcmbeC1.c1,2005,1119:30:00,6 , 5.15903,73.40811,20.88933,26.10253
sgpcmbeC1.c1,2005,1120:30:00,6 ,6.434563,46.87156,15.22417,15.64397
sgpcmbeC1.c1,2005,1121:30:00,5 ,5.809899,8.737613,7.596386,1.363377
sgpcmbeC1.c1,2005,1122:30:00,5 ,4.521883,11.97416,7.910182, 2.87714
sgpcmbeC1.c1,2005,1123:30:00,5 ,3.946098,9.704324,6.794858,2.317206