datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,02 0:30:00,26 ,       0, 2.99242,1.196926,0.921058
sgpcmbeC1.c1,2004,02 1:30:00,25 ,       0,2.306142, 1.05212,0.878423
sgpcmbeC1.c1,2004,02 2:30:00,26 ,       0, 2.81493,1.241898,0.911523
sgpcmbeC1.c1,2004,02 3:30:00,27 ,       0,2.557505,1.139211,0.909847
sgpcmbeC1.c1,2004,02 4:30:00,25 ,       0,2.533548,1.322933,0.930271
sgpcmbeC1.c1,2004,02 5:30:00,28 ,       0,2.534863,1.184048,0.963947
sgpcmbeC1.c1,2004,02 6:30:00,29 ,       0,2.636235,1.087371,0.927265
sgpcmbeC1.c1,2004,02 7:30:00,29 ,0.186012,30.27192, 6.10368,8.368045
sgpcmbeC1.c1,2004,02 8:30:00,29 ,0.033319,179.3167,64.61905,64.60323
sgpcmbeC1.c1,2004,02 9:30:00,29 ,0.032681,362.9751,142.8571,142.4632
sgpcmbeC1.c1,2004,0210:30:00,29 ,       0,528.1199,242.4054,207.8745
sgpcmbeC1.c1,2004,0211:30:00,29 ,       0,637.5283,299.5837,252.9089
sgpcmbeC1.c1,2004,0212:30:00,29 ,0.012711,698.1676,337.3487,262.6562
sgpcmbeC1.c1,2004,0213:30:00,29 ,       0, 667.658,369.6928,242.3761
sgpcmbeC1.c1,2004,0214:30:00,29 ,0.041412,592.6219,288.5151,211.9435
sgpcmbeC1.c1,2004,0215:30:00,29 ,0.179306,454.8268, 207.399,168.2085
sgpcmbeC1.c1,2004,0216:30:00,29 ,       0,268.5151,117.6595, 101.348
sgpcmbeC1.c1,2004,0217:30:00,29 ,       0,91.84391,31.14799,30.19254
sgpcmbeC1.c1,2004,0218:30:00,29 ,       0,  4.5309,1.174978,1.212848
sgpcmbeC1.c1,2004,0219:30:00,29 ,       0,2.781714,1.090339,1.035004
sgpcmbeC1.c1,2004,0220:30:00,29 ,       0,2.588058,1.015999,0.967892
sgpcmbeC1.c1,2004,0221:30:00,28 ,       0,2.617326,1.037559,0.953166
sgpcmbeC1.c1,2004,0222:30:00,27 ,       0,2.634877, 1.19324,0.923375
sgpcmbeC1.c1,2004,0223:30:00,27 ,       0, 2.83705,1.248033,0.927263