datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,01 0:30:00,30 ,       0,2.789222,0.985533,0.997111
sgpcmbeC1.c1,2005,01 1:30:00,31 ,       0,2.520939,0.762975,0.747608
sgpcmbeC1.c1,2005,01 2:30:00,30 ,       0,2.889716,0.802985,0.900924
sgpcmbeC1.c1,2005,01 3:30:00,31 ,       0,2.323744,0.913408,0.753854
sgpcmbeC1.c1,2005,01 4:30:00,31 ,0.002078,2.232402,0.869244,0.731277
sgpcmbeC1.c1,2005,01 5:30:00,31 ,0.234397,2.374368,1.090362,0.636059
sgpcmbeC1.c1,2005,01 6:30:00,31 , 0.21876,2.811697,1.227823,0.602767
sgpcmbeC1.c1,2005,01 7:30:00,31 , 0.92426,10.79606,5.313487,2.933365
sgpcmbeC1.c1,2005,01 8:30:00,31 ,9.787603,134.7234,69.46144,46.59021
sgpcmbeC1.c1,2005,01 9:30:00,31 ,12.62745,320.1648,164.8883,108.4233
sgpcmbeC1.c1,2005,0110:30:00,31 ,27.60892,478.1796,255.4893, 161.617
sgpcmbeC1.c1,2005,0111:30:00,31 ,34.81154,585.9933,326.0114,193.6486
sgpcmbeC1.c1,2005,0112:30:00,31 ,49.78816,631.5692,358.0084,195.2768
sgpcmbeC1.c1,2005,0113:30:00,31 ,40.39817,612.3506,342.1195,194.8917
sgpcmbeC1.c1,2005,0114:30:00,31 ,25.65625,529.5149,279.2375,172.7042
sgpcmbeC1.c1,2005,0115:30:00,31 ,21.75476,390.1299,201.7209,129.5331
sgpcmbeC1.c1,2005,0116:30:00,31 ,6.777352,212.1915,99.83807,66.31918
sgpcmbeC1.c1,2005,0117:30:00,31 ,1.447135,55.38332,18.73205,14.18115
sgpcmbeC1.c1,2005,0118:30:00,31 ,  0.0873,3.215523,1.535565,0.784442
sgpcmbeC1.c1,2005,0119:30:00,31 ,       0,3.018846,1.154997,0.806801
sgpcmbeC1.c1,2005,0120:30:00,31 ,       0,3.161742,0.948462,0.866532
sgpcmbeC1.c1,2005,0121:30:00,31 ,       0,3.157928,0.991488,0.912232
sgpcmbeC1.c1,2005,0122:30:00,30 ,       0,2.519217,0.810189,0.758281
sgpcmbeC1.c1,2005,0123:30:00,31 ,       0,2.803037,0.869357, 0.85746