datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,02 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 1:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 2:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 3:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 4:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 5:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 6:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 7:30:00,23 ,1.407863,46.75589,15.98919,13.73377
sgpcmbeC1.c1,1998,02 8:30:00,22 ,6.935236,97.96461,36.62485,25.35063
sgpcmbeC1.c1,1998,02 9:30:00,22 ,9.230596,121.0795,47.08216, 32.9176
sgpcmbeC1.c1,1998,0210:30:00,22 ,9.512305,184.9967,55.37268,42.44659
sgpcmbeC1.c1,1998,0211:30:00,23 ,12.30477,166.8923,60.85605,51.87449
sgpcmbeC1.c1,1998,0212:30:00,23 ,3.868105,176.6978,57.45336,54.96686
sgpcmbeC1.c1,1998,0213:30:00,22 ,5.287645,159.9643,66.97988,55.38102
sgpcmbeC1.c1,1998,0214:30:00,22 ,16.16642, 178.192,70.20759,49.71906
sgpcmbeC1.c1,1998,0215:30:00,23 ,6.408257,181.4856,73.63274,49.67167
sgpcmbeC1.c1,1998,0216:30:00,23 ,9.789453,113.7808,45.40356,25.37855
sgpcmbeC1.c1,1998,0217:30:00,22 ,4.227025,64.84634,34.34868,20.10907
sgpcmbeC1.c1,1998,0218:30:00,23 ,       0,15.92336,3.910814,4.183394
sgpcmbeC1.c1,1998,0219:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0220:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0221:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0222:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0223:30:00,25 ,       0,       0,       0,       0