datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,02 0:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 1:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 2:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 3:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 4:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 5:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 6:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,02 7:30:00,28 ,       0,9.758718,2.712461,2.871988
sgpcmbeC1.c1,2001,02 8:30:00,27 ,0.952644,53.46066,21.03153,17.06069
sgpcmbeC1.c1,2001,02 9:30:00,28 ,3.856789,96.66435,41.03046,31.98983
sgpcmbeC1.c1,2001,0210:30:00,28 ,1.019173, 123.866,61.53793,42.10238
sgpcmbeC1.c1,2001,0211:30:00,27 ,9.230426,128.5146,75.24649,47.37906
sgpcmbeC1.c1,2001,0212:30:00,28 ,6.224388,139.8656,73.60779,49.14813
sgpcmbeC1.c1,2001,0213:30:00,27 ,5.411023,138.4332,77.83741,49.80504
sgpcmbeC1.c1,2001,0214:30:00,27 ,6.988498,127.2452,75.18382,46.42011
sgpcmbeC1.c1,2001,0215:30:00,28 ,3.752042,104.9685,57.67365,37.47556
sgpcmbeC1.c1,2001,0216:30:00,28 ,2.168108,70.16804,36.14302,24.41202
sgpcmbeC1.c1,2001,0217:30:00,28 ,       0,26.78078,11.42623,8.371877
sgpcmbeC1.c1,2001,0218:30:00,28 ,       0,1.033765,0.153854, 0.31958
sgpcmbeC1.c1,2001,0219:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0220:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0221:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0222:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0223:30:00,19 ,       0,       0,       0,       0