datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,12 0:30:00,18 ,       0,0.465752,0.030933,0.109573
sgpcmbeC1.c1,2001,12 1:30:00,17 ,       0,0.040518,0.003365,0.010076
sgpcmbeC1.c1,2001,12 2:30:00,19 ,       0,0.007742,0.000407,0.001776
sgpcmbeC1.c1,2001,12 3:30:00,22 ,       0,0.165737,0.007534,0.035335
sgpcmbeC1.c1,2001,12 4:30:00,23 ,       0,0.004836, 0.00021,0.001008
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 ,0.105221,8.848614,2.177094,1.996533
sgpcmbeC1.c1,2001,12 8:30:00,31 ,0.046642,117.3326,55.40345,41.36958
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 ,       0,383.1155,235.8852,152.8226
sgpcmbeC1.c1,2001,1215:30:00,31 ,       0, 247.174,140.7537,95.75248
sgpcmbeC1.c1,2001,1216:30:00,31 ,       0,89.77367,44.50594,32.62894
sgpcmbeC1.c1,2001,1217:30:00,31 , 0.00482,3.003649,1.114206,0.909374
sgpcmbeC1.c1,2001,1218:30:00,30 ,       0,0.955977,0.096599,0.245369
sgpcmbeC1.c1,2001,1219:30:00,28 ,       0,0.502576,0.052836,0.137106
sgpcmbeC1.c1,2001,1220:30:00,26 ,       0,0.494515,0.041693,0.119159
sgpcmbeC1.c1,2001,1221:30:00,23 ,       0,0.258031,0.013182,0.053634
sgpcmbeC1.c1,2001,1222:30:00,22 ,       0, 0.44325,0.026892,0.095641
sgpcmbeC1.c1,2001,1223:30:00,18 ,       0,0.212396,  0.0132,0.049879