datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,08 0:30:00,30 ,       0,0.164761,0.005492,0.030081
sgpcmbeC1.c1,1998,08 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,08 2:30:00,30 ,       0,0.254996,  0.0085,0.046556
sgpcmbeC1.c1,1998,08 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,08 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,08 5:30:00,30 ,       0,6.328057,2.182604,1.780859
sgpcmbeC1.c1,1998,08 6:30:00,30 ,25.78375,73.52111,45.54541,13.53889
sgpcmbeC1.c1,1998,08 7:30:00,30 ,53.59701,176.4236,108.0044,32.46076
sgpcmbeC1.c1,1998,08 8:30:00,30 ,68.51421,250.4725,160.6932,52.18311
sgpcmbeC1.c1,1998,08 9:30:00,30 ,79.84504,307.3744,187.0579,64.11113
sgpcmbeC1.c1,1998,0810:30:00,30 ,88.20767,430.3685,210.3978, 88.8269
sgpcmbeC1.c1,1998,0811:30:00,30 , 101.994,436.0467,226.4751,95.29789
sgpcmbeC1.c1,1998,0812:30:00,30 ,101.9288,465.9295,262.2813,105.0926
sgpcmbeC1.c1,1998,0813:30:00,31 ,99.85188,440.7035,262.1024,105.0047
sgpcmbeC1.c1,1998,0814:30:00,31 ,93.41142,397.3927,232.0568,86.71749
sgpcmbeC1.c1,1998,0815:30:00,31 ,11.87984,343.5949,189.7957,73.71524
sgpcmbeC1.c1,1998,0816:30:00,31 ,11.12587,238.4249,146.8256,54.44667
sgpcmbeC1.c1,1998,0817:30:00,31 ,15.82567,150.5136,100.3442,33.63638
sgpcmbeC1.c1,1998,0818:30:00,31 ,8.347749,87.56518,49.87147,  18.534
sgpcmbeC1.c1,1998,0819:30:00,31 ,       0,18.98587,4.350908,4.279754
sgpcmbeC1.c1,1998,0820:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0821:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0822:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0823:30:00,30 ,       0,0.052306,0.001744, 0.00955