datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,09 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,09 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,09 2:30:00,28 ,       0,0.113686, 0.00406,0.021485
sgpcmbeC1.c1,1997,09 3:30:00,28 ,       0,0.596534,0.032583,0.118488
sgpcmbeC1.c1,1997,09 4:30:00,28 ,       0,1.095537,0.056517,0.217811
sgpcmbeC1.c1,1997,09 5:30:00,28 ,       0,0.056098,0.005667,0.016677
sgpcmbeC1.c1,1997,09 6:30:00,28 ,2.004893,50.36335,21.92909,14.02006
sgpcmbeC1.c1,1997,09 7:30:00,29 ,11.23836,263.5423,131.4079,71.28098
sgpcmbeC1.c1,1997,09 8:30:00,28 ,32.86436,442.9975,279.6327,122.8377
sgpcmbeC1.c1,1997,09 9:30:00,28 ,51.48249,630.7888,387.3305,191.5165
sgpcmbeC1.c1,1997,0910:30:00,28 ,44.02769,  774.09,503.9165,243.1255
sgpcmbeC1.c1,1997,0911:30:00,28 ,120.8719,869.5408,583.5581,245.7988
sgpcmbeC1.c1,1997,0912:30:00,28 ,110.2831,906.1094, 621.915,258.9212
sgpcmbeC1.c1,1997,0913:30:00,28 , 90.5706,874.2483,616.0659,236.9847
sgpcmbeC1.c1,1997,0914:30:00,28 ,113.3606,777.6625, 558.991,199.6337
sgpcmbeC1.c1,1997,0915:30:00,27 ,55.10583,625.0686,423.4724,165.1667
sgpcmbeC1.c1,1997,0916:30:00,27 ,32.97184,  429.21,276.8779,118.3963
sgpcmbeC1.c1,1997,0917:30:00,27 ,10.81949,221.9367,121.4856,62.75849
sgpcmbeC1.c1,1997,0918:30:00,27 ,0.107624,44.99557,15.66553,13.53292
sgpcmbeC1.c1,1997,0919:30:00,27 ,       0, 0.06007, 0.00606,0.017523
sgpcmbeC1.c1,1997,0920:30:00,27 ,       0,0.056782,0.002103,0.010928
sgpcmbeC1.c1,1997,0921:30:00,27 ,       0,0.052824,0.001956,0.010166
sgpcmbeC1.c1,1997,0922:30:00,27 ,       0,0.057614,0.002134,0.011088
sgpcmbeC1.c1,1997,0923:30:00,27 ,       0,       0,       0,       0