datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,02 0:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 1:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 2:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 3:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 4:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 5:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 6:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 7:30:00,28 ,4.915934,26.34751,12.60186,5.935039
sgpcmbeC1.c1,2006,02 8:30:00,28 ,4.965847,  49.484,18.60731,12.01313
sgpcmbeC1.c1,2006,02 9:30:00,28 ,1.935074,54.00132,20.15149, 16.5152
sgpcmbeC1.c1,2006,0210:30:00,28 ,1.016752,79.01758,24.77257,22.05313
sgpcmbeC1.c1,2006,0211:30:00,28 ,0.778842,102.7544,26.97149,27.38372
sgpcmbeC1.c1,2006,0212:30:00,28 ,0.398163,115.3651, 27.8945, 27.7392
sgpcmbeC1.c1,2006,0213:30:00,28 ,0.558278,97.47684, 32.0136,29.15599
sgpcmbeC1.c1,2006,0214:30:00,28 ,1.459559,93.73105,23.11335,21.86782
sgpcmbeC1.c1,2006,0215:30:00,28 ,1.557791,58.36526,15.84513,15.38562
sgpcmbeC1.c1,2006,0216:30:00,28 ,4.149882,51.84834,19.62291, 14.9898
sgpcmbeC1.c1,2006,0217:30:00,28 ,7.073551,36.92968,17.65972,8.104555
sgpcmbeC1.c1,2006,0218:30:00,26 ,       0,12.22741,  2.8937, 2.86729
sgpcmbeC1.c1,2006,0219:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0220:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0221:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0222:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0223:30:00,15 ,       0,       0,       0,       0