datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,12 0:30:00,29 ,       0,638.7476,79.51156,151.2972
sgpcmbeC1.c1,2007,12 1:30:00,29 ,       0,818.1564,85.24118,179.5798
sgpcmbeC1.c1,2007,12 2:30:00,29 ,       0,754.0604, 92.4059,178.5871
sgpcmbeC1.c1,2007,12 3:30:00,29 ,       0,810.3379,85.48403,177.2094
sgpcmbeC1.c1,2007,12 4:30:00,29 ,       0,977.4143,124.7237,  249.15
sgpcmbeC1.c1,2007,12 5:30:00,29 ,       0,2033.872,155.2055,392.5623
sgpcmbeC1.c1,2007,12 6:30:00,29 ,       0,2218.231,165.6617,419.0727
sgpcmbeC1.c1,2007,12 7:30:00,29 ,       0,982.7046,146.9792,238.2508
sgpcmbeC1.c1,2007,12 8:30:00,29 ,       0,1977.423,189.9019,410.9066
sgpcmbeC1.c1,2007,12 9:30:00,30 ,       0, 1238.12,136.9033,256.3946
sgpcmbeC1.c1,2007,1210:30:00,30 ,       0,880.2833,121.0903,220.0251
sgpcmbeC1.c1,2007,1211:30:00,30 ,       0, 1253.73,192.5947,344.4119
sgpcmbeC1.c1,2007,1212:30:00,30 ,       0,1928.911,192.2702,413.8944
sgpcmbeC1.c1,2007,1213:30:00,30 ,       0,652.9666,118.3861,189.2519
sgpcmbeC1.c1,2007,1214:30:00,30 ,       0,1913.071,147.6968,363.1004
sgpcmbeC1.c1,2007,1215:30:00,30 ,       0,567.3508,89.82115,160.6523
sgpcmbeC1.c1,2007,1216:30:00,29 ,       0,  923.58,105.7694,201.7689
sgpcmbeC1.c1,2007,1217:30:00,29 ,       0,508.9138,82.70372,139.6211
sgpcmbeC1.c1,2007,1218:30:00,28 ,       0,582.1498,81.98024,150.8504
sgpcmbeC1.c1,2007,1219:30:00,28 ,       0,423.5414,75.87428,135.1993
sgpcmbeC1.c1,2007,1220:30:00,28 ,       0,486.3896,65.32053,132.9367
sgpcmbeC1.c1,2007,1221:30:00,28 ,       0,627.9161,69.45609,157.0779
sgpcmbeC1.c1,2007,1222:30:00,28 ,       0,678.9713,67.99556,146.9142
sgpcmbeC1.c1,2007,1223:30:00,28 ,       0, 330.719,51.37725,87.81141