datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,12 0:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 1:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 2:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 3:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 4:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 7:30:00,31 ,       0,8.618732,1.906532,2.028667
sgpcmbeC1.c1,2001,12 8:30:00,31 ,0.046642,117.3326,55.36777,41.41845
sgpcmbeC1.c1,2001,12 9:30:00,31 , 0.25544,268.4545,146.6467,101.4517
sgpcmbeC1.c1,2001,1210:30:00,31 ,0.334419,396.2806,227.4281,151.1971
sgpcmbeC1.c1,2001,1211:30:00,31 ,0.549038,484.8699,307.1497, 185.901
sgpcmbeC1.c1,2001,1212:30:00,31 ,0.251526,504.5556,336.2357,200.9941
sgpcmbeC1.c1,2001,1213:30:00,30 ,0.039616,474.1442,304.6094,190.4159
sgpcmbeC1.c1,2001,1214:30:00,31 ,       0,383.1155,235.8791,152.8323
sgpcmbeC1.c1,2001,1215:30:00,31 ,       0, 247.174,  140.75,95.75824
sgpcmbeC1.c1,2001,1216:30:00,31 ,       0,89.77367,44.48274, 32.6615
sgpcmbeC1.c1,2001,1217:30:00,31 ,       0,2.742708,0.799671, 0.86309
sgpcmbeC1.c1,2001,1218:30:00,30 ,       0, 0.10384,0.003461,0.018959
sgpcmbeC1.c1,2001,1219:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1220:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1221:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1222:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1223:30:00,18 ,       0,       0,       0,       0