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 ,       0,35.06322,9.848365,7.220545
sgpcmbeC1.c1,2001,02 8:30:00,27 , 4.96784,41.05489,14.91186,10.19709
sgpcmbeC1.c1,2001,02 9:30:00,28 ,2.240654,60.59101,21.27507,15.73775
sgpcmbeC1.c1,2001,0210:30:00,28 ,1.608562,90.02976,24.35987,24.71786
sgpcmbeC1.c1,2001,0211:30:00,28 ,0.954502,70.97334,26.84677,21.34338
sgpcmbeC1.c1,2001,0212:30:00,28 ,0.616835,116.7541,31.87459,27.52776
sgpcmbeC1.c1,2001,0213:30:00,28 ,0.657643,115.8877,33.85375,32.71177
sgpcmbeC1.c1,2001,0214:30:00,28 ,0.566681,103.8723,29.36392,27.98869
sgpcmbeC1.c1,2001,0215:30:00,26 ,2.023782,60.33766,21.95064,18.59217
sgpcmbeC1.c1,2001,0216:30:00,27 ,3.686624,53.80961,16.99063,14.99567
sgpcmbeC1.c1,2001,0217:30:00,28 ,2.483109,62.99641,16.32436,13.96121
sgpcmbeC1.c1,2001,0218:30:00,28 ,       0,7.875355, 2.04825,2.367663
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