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 ,0.006397,31.31087,11.01425, 11.6758
sgpcmbeC1.c1,2007,02 8:30:00,28 ,0.020297,82.97572,33.74267,25.53836
sgpcmbeC1.c1,2007,02 9:30:00,28 ,0.028416,121.8071,46.36078,32.00633
sgpcmbeC1.c1,2007,0210:30:00,28 ,0.064118,212.9393,56.50937, 63.7038
sgpcmbeC1.c1,2007,0211:30:00,28 ,   0.278,137.4143,30.96377,34.31165
sgpcmbeC1.c1,2007,0212:30:00,28 ,0.146888,102.8804,19.25597,28.47796
sgpcmbeC1.c1,2007,0213:30:00,28 ,0.125156,252.4991,48.87502,66.53091
sgpcmbeC1.c1,2007,0214:30:00,28 , 0.05148,211.8664,46.89793,51.07101
sgpcmbeC1.c1,2007,0215:30:00,28 ,  0.0026,190.4408,53.50244,50.96099
sgpcmbeC1.c1,2007,0216:30:00,28 ,0.052465,97.12794,37.95381,29.80487
sgpcmbeC1.c1,2007,0217:30:00,28 ,       0,50.06767,19.34499,20.66951
sgpcmbeC1.c1,2007,0218:30:00,28 ,       0,5.089527,0.628187,1.232622
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