datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,02 0:30:00,26 ,       0,0.007525,0.000289,0.001476
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 ,       0,12.60485,3.865207, 4.32551
sgpcmbeC1.c1,1998,02 8:30:00,22 ,2.523793, 57.1294,23.85376,18.02603
sgpcmbeC1.c1,1998,02 9:30:00,22 ,7.176212,98.12175,44.34079,31.17457
sgpcmbeC1.c1,1998,0210:30:00,22 ,11.07026, 125.283,67.83859,38.74721
sgpcmbeC1.c1,1998,0211:30:00,23 ,17.38123,  148.06,82.35009,44.13525
sgpcmbeC1.c1,1998,0212:30:00,23 ,11.66718,156.1638,95.90693,46.27349
sgpcmbeC1.c1,1998,0213:30:00,22 ,13.77017,152.8631,98.58558,47.91164
sgpcmbeC1.c1,1998,0214:30:00,22 ,14.52697, 140.697,91.09408,40.20372
sgpcmbeC1.c1,1998,0215:30:00,23 ,10.94545,115.3915,65.89427,30.65872
sgpcmbeC1.c1,1998,0216:30:00,23 , 3.97318,83.61271,41.00245,23.59264
sgpcmbeC1.c1,1998,0217:30:00,22 , 1.25969,34.80367,15.74005,10.57714
sgpcmbeC1.c1,1998,0218:30:00,23 ,       0,2.368727,0.352173,0.690375
sgpcmbeC1.c1,1998,0219:30:00,25 ,       0,0.014837,0.000593,0.002967
sgpcmbeC1.c1,1998,0220:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0221:30:00,25 ,       0,0.000201,8.033E-6, 0.00004
sgpcmbeC1.c1,1998,0222:30:00,25 ,       0,  0.0001,4.013E-6, 0.00002
sgpcmbeC1.c1,1998,0223:30:00,25 ,       0,  0.0001,4.013E-6, 0.00002