datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,12 0:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 1:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 2:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 3:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 4:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 5:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 6:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,12 7:30:00,30 ,       0,9.118535, 2.70151,2.608251
sgpcmbeC1.c1,2007,12 8:30:00,30 ,1.547635,54.34108,30.03885,13.94487
sgpcmbeC1.c1,2007,12 9:30:00,30 ,13.40907,133.4321,64.37437,30.03762
sgpcmbeC1.c1,2007,1210:30:00,30 ,19.05475,206.5402,87.04969,41.67966
sgpcmbeC1.c1,2007,1211:30:00,30 ,27.96742, 243.611,93.60431,  47.406
sgpcmbeC1.c1,2007,1212:30:00,30 ,25.32433,310.6507,104.2074,60.05111
sgpcmbeC1.c1,2007,1213:30:00,30 ,36.60885,322.7484,102.7813, 59.8079
sgpcmbeC1.c1,2007,1214:30:00,30 ,22.27173,258.3845,91.78477,52.42084
sgpcmbeC1.c1,2007,1215:30:00,30 ,16.08875,148.9324,67.47191,36.79405
sgpcmbeC1.c1,2007,1216:30:00,30 ,4.795839,64.44432,30.97513,17.05329
sgpcmbeC1.c1,2007,1217:30:00,30 ,       0, 5.88306,2.094488,1.738193
sgpcmbeC1.c1,2007,1218:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1219:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1220:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1221:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1222:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,1223:30:00,15 ,       0,       0,       0,       0