datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,12 0:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 1:30:00,26 ,       0,0.059753,0.002298,0.011719
sgpcmbeC1.c1,2002,12 2:30:00,25 ,       0,1.524316,0.068977,0.305821
sgpcmbeC1.c1,2002,12 3:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 6:30:00,31 ,       0,0.104294,0.003364,0.018732
sgpcmbeC1.c1,2002,12 7:30:00,31 ,       0,20.24655,5.328774,4.706489
sgpcmbeC1.c1,2002,12 8:30:00,31 ,1.089811,162.5958,76.15413,44.07448
sgpcmbeC1.c1,2002,12 9:30:00,31 ,1.910009, 323.933,204.3627,102.8708
sgpcmbeC1.c1,2002,1210:30:00,31 ,50.24292,467.2479,314.8985,147.4861
sgpcmbeC1.c1,2002,1211:30:00,31 ,64.51975,555.7126,375.5813,164.7172
sgpcmbeC1.c1,2002,1212:30:00,31 ,39.08184,582.8782,408.6303,179.8146
sgpcmbeC1.c1,2002,1213:30:00,31 ,36.32188,537.1727,367.8017,163.7075
sgpcmbeC1.c1,2002,1214:30:00,31 ,36.52691,468.4027,301.1325,133.7196
sgpcmbeC1.c1,2002,1215:30:00,31 ,13.17431,291.4496,183.4294,90.58244
sgpcmbeC1.c1,2002,1216:30:00,31 ,6.364516,125.2731,67.57251,36.26956
sgpcmbeC1.c1,2002,1217:30:00,31 ,       0,10.26568,3.471948,3.030006
sgpcmbeC1.c1,2002,1218:30:00,31 ,       0,1.569593,0.112769,0.375437
sgpcmbeC1.c1,2002,1219:30:00,31 ,       0, 0.42444,0.013692,0.076232
sgpcmbeC1.c1,2002,1220:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1221:30:00,29 ,       0,1.703227,0.102565,0.375882
sgpcmbeC1.c1,2002,1222:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1223:30:00,27 ,       0,       0,       0,       0