datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,12 0:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,12 1:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,12 2:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,12 3:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,12 4:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,12 5:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,12 7:30:00,31 ,       0,10.91139,5.519685,2.981393
sgpcmbeC1.c1,2005,12 8:30:00,31 ,4.973539,31.80413,13.49148,8.341733
sgpcmbeC1.c1,2005,12 9:30:00,31 ,2.474658,65.23811, 17.7894,16.76753
sgpcmbeC1.c1,2005,1210:30:00,31 ,0.890404,68.91389,15.06278,16.02609
sgpcmbeC1.c1,2005,1211:30:00,30 ,0.396399,57.25245,16.75883,18.42544
sgpcmbeC1.c1,2005,1212:30:00,31 ,0.433859,83.63588, 20.5108,22.17246
sgpcmbeC1.c1,2005,1213:30:00,31 ,0.474212,82.12694,21.09579,23.12891
sgpcmbeC1.c1,2005,1214:30:00,31 ,0.788607,53.41695,11.70238,12.94669
sgpcmbeC1.c1,2005,1215:30:00,31 ,1.345994,30.81884,10.38684,8.679254
sgpcmbeC1.c1,2005,1216:30:00,31 ,5.355822,30.00811, 11.8865,6.922484
sgpcmbeC1.c1,2005,1217:30:00,31 ,       0,6.384755,3.321586,2.014559
sgpcmbeC1.c1,2005,1218:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,1219:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,1220:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,1221:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,1222:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,1223:30:00,24 ,       0,       0,       0,       0