datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,12 0:30:00,30 ,       0,4.265278,2.300552,1.134012
sgpcmbeC1.c1,2005,12 1:30:00,30 ,       0,4.455798,2.274721,1.285931
sgpcmbeC1.c1,2005,12 2:30:00,30 ,       0,4.482722,2.267649,1.282847
sgpcmbeC1.c1,2005,12 3:30:00,29 ,       0,4.184123,2.217765,1.142014
sgpcmbeC1.c1,2005,12 4:30:00,31 ,       0,3.753468,1.870267,1.205692
sgpcmbeC1.c1,2005,12 5:30:00,31 ,       0,3.746624,1.833989,1.195419
sgpcmbeC1.c1,2005,12 6:30:00,31 ,       0,3.879224,1.625846,1.268071
sgpcmbeC1.c1,2005,12 7:30:00,31 ,0.183112, 18.4025,6.664303,4.742997
sgpcmbeC1.c1,2005,12 8:30:00,31 ,7.394171,157.0577,90.37679,40.95238
sgpcmbeC1.c1,2005,12 9:30:00,31 ,54.83908, 324.095,216.5218,84.40698
sgpcmbeC1.c1,2005,1210:30:00,31 ,103.0148,456.2963,319.6532,110.1324
sgpcmbeC1.c1,2005,1211:30:00,30 ,91.70068,535.1251,388.3348,146.1121
sgpcmbeC1.c1,2005,1212:30:00,31 ,88.19639,559.5871,414.7687,157.4214
sgpcmbeC1.c1,2005,1213:30:00,31 ,74.75672,518.1127,391.0732,146.1942
sgpcmbeC1.c1,2005,1214:30:00,31 ,50.17993,424.2538,299.5647,141.6717
sgpcmbeC1.c1,2005,1215:30:00,31 ,18.03208,288.4267,188.4637, 92.9466
sgpcmbeC1.c1,2005,1216:30:00,31 ,7.113332,126.3209,68.69056,35.53419
sgpcmbeC1.c1,2005,1217:30:00,31 ,       0,9.801438,4.073521,2.597385
sgpcmbeC1.c1,2005,1218:30:00,31 ,       0,4.799252,2.237851,1.525557
sgpcmbeC1.c1,2005,1219:30:00,30 ,       0,4.843882,2.121095,1.470855
sgpcmbeC1.c1,2005,1220:30:00,29 ,       0,4.847769,2.114157,1.525527
sgpcmbeC1.c1,2005,1221:30:00,30 ,       0,4.669286,1.988063,1.517459
sgpcmbeC1.c1,2005,1222:30:00,28 ,0.000078,4.576072,2.356133,1.290556
sgpcmbeC1.c1,2005,1223:30:00,30 ,       0,4.247591, 2.33824,1.283254