datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,02 0:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 1:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 2:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 3:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 4:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 5:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 6:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 7:30:00,28 ,1.881877,26.36808,11.42271,6.419131
sgpcmbeC1.c1,2007,02 8:30:00,28 ,3.177351,37.75224,15.00147,11.05354
sgpcmbeC1.c1,2007,02 9:30:00,28 ,2.159096,70.58501,20.35927,22.39836
sgpcmbeC1.c1,2007,0210:30:00,28 ,1.226329,70.42056,20.96439, 21.8924
sgpcmbeC1.c1,2007,0211:30:00,28 ,0.594111,75.62455,16.95486,19.87357
sgpcmbeC1.c1,2007,0212:30:00,28 ,0.328945,66.43682,19.56028,22.15502
sgpcmbeC1.c1,2007,0213:30:00,28 ,0.446844,151.2548,30.54268,38.33112
sgpcmbeC1.c1,2007,0214:30:00,28 ,0.616781,80.01894,25.14306,23.95812
sgpcmbeC1.c1,2007,0215:30:00,28 ,1.455068,78.98283,23.73017,22.12857
sgpcmbeC1.c1,2007,0216:30:00,28 ,2.130705,60.16006,22.26893,16.75954
sgpcmbeC1.c1,2007,0217:30:00,28 ,3.681299,31.71004,15.95681,7.165199
sgpcmbeC1.c1,2007,0218:30:00,28 ,       0,8.722996,2.336494,2.660423
sgpcmbeC1.c1,2007,0219:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0220:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0221:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0222:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0223:30:00,20 ,       0,       0,       0,       0