datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,12 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 5:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 6:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,12 7:30:00,31 ,       0,11.74601,4.698593,3.385669
sgpcmbeC1.c1,2006,12 8:30:00,31 ,5.580866,118.6075,43.58416,25.09023
sgpcmbeC1.c1,2006,12 9:30:00,31 ,20.67077,234.5035,85.82215, 47.5358
sgpcmbeC1.c1,2006,1210:30:00,31 ,31.78935,377.1928,117.0277, 81.0346
sgpcmbeC1.c1,2006,1211:30:00,31 ,53.06551,413.9096,139.3198, 88.7674
sgpcmbeC1.c1,2006,1212:30:00,31 ,59.03386,453.2755,152.5647,93.24223
sgpcmbeC1.c1,2006,1213:30:00,31 ,52.26912,335.2583,138.3738,79.55283
sgpcmbeC1.c1,2006,1214:30:00,31 ,49.34115,292.4123,117.2042,68.74211
sgpcmbeC1.c1,2006,1215:30:00,31 ,15.07837,181.6258,80.47099,42.14015
sgpcmbeC1.c1,2006,1216:30:00,31 ,3.485235,79.39227,35.31676,15.75585
sgpcmbeC1.c1,2006,1217:30:00,31 ,       0, 8.89914, 2.21827, 1.94422
sgpcmbeC1.c1,2006,1218:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,1219:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,1220:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,1221:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,1222:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,1223:30:00,29 ,       0,       0,       0,       0