datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,12 0:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 1:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 2:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 3:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 4:30:00,23 ,       0,       0,       0,       0
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 ,       0,12.52127,3.610885,3.380746
sgpcmbeC1.c1,2001,12 8:30:00,31 ,0.026456,53.71548,28.82999,19.59661
sgpcmbeC1.c1,2001,12 9:30:00,31 ,0.059648,110.8597,41.48992,28.46519
sgpcmbeC1.c1,2001,1210:30:00,31 ,0.109389,121.1788,50.75489,38.02018
sgpcmbeC1.c1,2001,1211:30:00,31 , 0.14062, 152.908,39.77795,40.42219
sgpcmbeC1.c1,2001,1212:30:00,31 ,0.124096, 93.2002,25.68077,30.93267
sgpcmbeC1.c1,2001,1213:30:00,30 ,0.091013,136.9809,34.62642,37.84943
sgpcmbeC1.c1,2001,1214:30:00,31 ,       0,98.71258,37.50343,25.97268
sgpcmbeC1.c1,2001,1215:30:00,31 ,       0,104.3258,41.75556,28.41771
sgpcmbeC1.c1,2001,1216:30:00,31 ,       0,50.64579,27.99051,17.54896
sgpcmbeC1.c1,2001,1217:30:00,31 ,       0,4.925531,1.493469,1.519523
sgpcmbeC1.c1,2001,1218:30:00,30 ,       0,0.564014,  0.0188,0.102974
sgpcmbeC1.c1,2001,1219:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1220:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1221:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1222:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1223:30:00,18 ,       0,       0,       0,       0