datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,11 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 6:30:00,30 ,       0,2.505218,0.394678,0.690068
sgpcmbeC1.c1,1999,11 7:30:00,30 ,2.136371,19.15477,11.18638,2.779565
sgpcmbeC1.c1,1999,11 8:30:00,30 ,3.548213,39.70013,9.661121,8.693624
sgpcmbeC1.c1,1999,11 9:30:00,30 ,2.096449,41.23678,8.169523,9.845253
sgpcmbeC1.c1,1999,1110:30:00,30 ,0.799706,61.25232,8.960581,14.78564
sgpcmbeC1.c1,1999,1111:30:00,30 ,0.291931,84.02195, 9.38144,18.10157
sgpcmbeC1.c1,1999,1112:30:00,30 ,0.269099, 73.6288,9.432791,18.25443
sgpcmbeC1.c1,1999,1113:30:00,30 ,0.265552,82.05893, 9.59283,19.00677
sgpcmbeC1.c1,1999,1114:30:00,30 ,0.935611,36.38889,7.758928, 10.0667
sgpcmbeC1.c1,1999,1115:30:00,30 ,2.213452, 61.7758, 10.1416,  13.946
sgpcmbeC1.c1,1999,1116:30:00,30 ,3.887981,29.48865,12.32326,6.835229
sgpcmbeC1.c1,1999,1117:30:00,30 ,0.991731,11.86077,6.668695,2.431381
sgpcmbeC1.c1,1999,1118:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1119:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1120:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1121:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1122:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1123:30:00,29 ,       0,       0,       0,       0