datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,08 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 5:30:00,31 ,       0,7.206454, 1.38451,1.746995
sgpcmbeC1.c1,2007,08 6:30:00,31 ,1.994926,84.46334,39.10431,17.94007
sgpcmbeC1.c1,2007,08 7:30:00,31 ,  18.401, 199.502,100.2926,39.73771
sgpcmbeC1.c1,2007,08 8:30:00,31 ,84.90397,300.4781,142.5352,52.68764
sgpcmbeC1.c1,2007,08 9:30:00,31 ,92.01719,334.4445,190.2958,86.12298
sgpcmbeC1.c1,2007,0810:30:00,31 ,103.1194,408.9599,223.2801,107.8719
sgpcmbeC1.c1,2007,0811:30:00,31 ,104.5957,474.0274,222.1062,109.6477
sgpcmbeC1.c1,2007,0812:30:00,31 ,80.95407,441.4739,237.7884,112.2575
sgpcmbeC1.c1,2007,0813:30:00,31 ,111.3158,505.7918,245.3796,106.4664
sgpcmbeC1.c1,2007,0814:30:00,31 ,62.22679,442.9888,210.7627, 98.0474
sgpcmbeC1.c1,2007,0815:30:00,31 ,44.91864,358.5361,188.8461,82.51326
sgpcmbeC1.c1,2007,0816:30:00,31 ,46.39428,248.6104,145.7681,52.20975
sgpcmbeC1.c1,2007,0817:30:00,31 ,44.00788,168.5395,105.9186,32.12893
sgpcmbeC1.c1,2007,0818:30:00,31 ,20.77565,77.56679,46.28738,14.87594
sgpcmbeC1.c1,2007,0819:30:00,31 ,       0,9.994875,3.447044, 3.31724
sgpcmbeC1.c1,2007,0820:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0821:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0822:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0823:30:00,31 ,       0,       0,       0,       0