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 ,4.285737,29.70075,13.05592,8.067878
sgpcmbeC1.c1,2006,02 8:30:00,28 ,24.55197,111.7851, 64.7728,23.49432
sgpcmbeC1.c1,2006,02 9:30:00,28 ,47.69781, 219.889,116.7442,57.56981
sgpcmbeC1.c1,2006,0210:30:00,28 , 54.2537,319.3894,151.3408,88.01784
sgpcmbeC1.c1,2006,0211:30:00,28 ,57.44244,402.7355, 182.473,114.7816
sgpcmbeC1.c1,2006,0212:30:00,28 ,59.29137,421.7061,199.7289,124.5539
sgpcmbeC1.c1,2006,0213:30:00,28 ,59.09039,444.3038,   199.5,121.3359
sgpcmbeC1.c1,2006,0214:30:00,28 ,56.25383,353.8245,163.9584,96.76758
sgpcmbeC1.c1,2006,0215:30:00,28 ,50.43618,299.8327,138.9694,74.67894
sgpcmbeC1.c1,2006,0216:30:00,28 ,39.73093,183.4879,95.30365,43.31047
sgpcmbeC1.c1,2006,0217:30:00,28 ,15.03648,85.90911,37.50284,17.13175
sgpcmbeC1.c1,2006,0218:30:00,26 ,       0,8.687738,1.960148,2.159302
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