datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,12 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 5:30:00,27 ,       0,0.202913,0.007515,0.039051
sgpcmbeC1.c1,2006,12 6:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 7:30:00,31 ,       0,10.05253,2.231153,3.008036
sgpcmbeC1.c1,2006,12 8:30:00,31 ,       0,124.3182,41.80317,44.88978
sgpcmbeC1.c1,2006,12 9:30:00,31 ,0.032421,277.8135, 117.874,111.0713
sgpcmbeC1.c1,2006,1210:30:00,31 ,0.078154,402.4033,185.7327,173.7534
sgpcmbeC1.c1,2006,1211:30:00,31 , 0.00333,478.3689,236.0253,202.5298
sgpcmbeC1.c1,2006,1212:30:00,31 ,0.117119, 507.868,257.3541,197.3681
sgpcmbeC1.c1,2006,1213:30:00,31 ,0.034279,455.6074,240.1777,191.1691
sgpcmbeC1.c1,2006,1214:30:00,31 ,       0,360.9277,196.2943,151.0043
sgpcmbeC1.c1,2006,1215:30:00,31 ,       0,222.6686,115.5512,88.60059
sgpcmbeC1.c1,2006,1216:30:00,31 ,       0,74.31485,36.06348,29.02374
sgpcmbeC1.c1,2006,1217:30:00,31 ,       0,2.721461,0.644287,0.703409
sgpcmbeC1.c1,2006,1218:30:00,31 ,       0, 0.41162,0.013278,0.073929
sgpcmbeC1.c1,2006,1219:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,1220:30:00,29 ,       0,0.202978,0.006999,0.037692
sgpcmbeC1.c1,2006,1221:30:00,27 ,       0,0.342954,0.020655,0.076511
sgpcmbeC1.c1,2006,1222:30:00,28 ,       0,0.222772,0.007956,  0.0421
sgpcmbeC1.c1,2006,1223:30:00,29 ,       0,0.353652,0.012195,0.065671