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 ,       0,10.24591,1.301807,2.180405
sgpcmbeC1.c1,2007,12 8:30:00,30 ,       0,117.6012,35.65984,40.75421
sgpcmbeC1.c1,2007,12 9:30:00,30 ,0.019112,262.5937,99.40152,104.3555
sgpcmbeC1.c1,2007,1210:30:00,30 ,0.075726,397.5636,163.7069,167.4208
sgpcmbeC1.c1,2007,1211:30:00,30 ,0.038605,474.8259,213.7171,207.8351
sgpcmbeC1.c1,2007,1212:30:00,30 ,0.106648, 495.205, 218.328,217.7218
sgpcmbeC1.c1,2007,1213:30:00,30 ,       0,452.2495, 210.547,203.4997
sgpcmbeC1.c1,2007,1214:30:00,30 ,0.024067,372.7146,161.7395,157.1839
sgpcmbeC1.c1,2007,1215:30:00,30 ,0.041702,237.7309,96.27424,93.71429
sgpcmbeC1.c1,2007,1216:30:00,30 ,0.002119,92.28378,31.51272,33.34953
sgpcmbeC1.c1,2007,1217:30:00,30 ,       0,3.228133,0.749337,0.956686
sgpcmbeC1.c1,2007,1218:30:00,28 ,       0,1.635671, 0.08488,0.316579
sgpcmbeC1.c1,2007,1219:30:00,26 ,       0,1.050638,0.046721, 0.20727
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