datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,12 0:30:00,30 ,       0,249.1651,17.03073,51.15904
sgpcmbeC1.c1,2003,12 1:30:00,30 ,       0, 65.8897,7.087739,  16.006
sgpcmbeC1.c1,2003,12 2:30:00,29 ,       0,78.37917,7.703592,16.54385
sgpcmbeC1.c1,2003,12 3:30:00,29 ,       0,112.6082, 8.52267,22.23394
sgpcmbeC1.c1,2003,12 4:30:00,29 ,       0,80.82287,8.832587,21.06996
sgpcmbeC1.c1,2003,12 5:30:00,29 ,       0,96.79234,12.49035,26.18902
sgpcmbeC1.c1,2003,12 6:30:00,28 ,       0,459.3568, 21.2665,86.33915
sgpcmbeC1.c1,2003,12 7:30:00,28 ,       0,307.8055,15.62174,58.14007
sgpcmbeC1.c1,2003,12 8:30:00,29 ,       0,432.1434,25.69342,84.86133
sgpcmbeC1.c1,2003,12 9:30:00,31 ,       0,161.7704,10.10357,30.60558
sgpcmbeC1.c1,2003,1210:30:00,31 ,       0,263.8872,22.32313,59.81749
sgpcmbeC1.c1,2003,1211:30:00,31 ,       0,328.8057,21.16033,63.01904
sgpcmbeC1.c1,2003,1212:30:00,31 ,       0,197.9333,17.89233,46.35711
sgpcmbeC1.c1,2003,1213:30:00,31 ,       0,217.1928,15.88072, 43.6205
sgpcmbeC1.c1,2003,1214:30:00,31 ,       0,303.0335,17.75897,55.08558
sgpcmbeC1.c1,2003,1215:30:00,31 ,       0,68.17208,9.058242,18.73403
sgpcmbeC1.c1,2003,1216:30:00,31 ,       0,122.8874,10.07142,24.02125
sgpcmbeC1.c1,2003,1217:30:00,31 ,       0,88.92941,12.11552,24.73013
sgpcmbeC1.c1,2003,1218:30:00,31 ,       0,291.5233,16.95429,53.72647
sgpcmbeC1.c1,2003,1219:30:00,31 ,       0,151.5312,16.42623,37.23306
sgpcmbeC1.c1,2003,1220:30:00,31 ,       0,256.0966,17.07585,48.10104
sgpcmbeC1.c1,2003,1221:30:00,31 ,       0,227.6263,21.52328,55.32056
sgpcmbeC1.c1,2003,1222:30:00,31 ,       0,217.7877,16.52954,45.23554
sgpcmbeC1.c1,2003,1223:30:00,31 ,       0,216.2554,14.56984,  41.286