datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,06 0:30:00,30 ,       0,0.815812,0.157311,0.260938
sgpcmbeC1.c1,2006,06 1:30:00,30 ,       0,1.029302,0.102581,0.261192
sgpcmbeC1.c1,2006,06 2:30:00,30 ,       0,1.284956,0.145554,0.282587
sgpcmbeC1.c1,2006,06 3:30:00,30 ,       0,0.820719, 0.13945,0.195961
sgpcmbeC1.c1,2006,06 4:30:00,30 ,       0,0.594442,0.114936,0.181176
sgpcmbeC1.c1,2006,06 5:30:00,30 ,0.162987,16.35823,6.173635,5.432873
sgpcmbeC1.c1,2006,06 6:30:00,30 ,0.002506,138.3498, 72.1251,  49.813
sgpcmbeC1.c1,2006,06 7:30:00,30 ,0.085732,321.3566,185.6237,118.0443
sgpcmbeC1.c1,2006,06 8:30:00,30 ,0.217667,501.3754,315.6735,185.9075
sgpcmbeC1.c1,2006,06 9:30:00,30 ,       0,662.6166,451.6051,232.6806
sgpcmbeC1.c1,2006,0610:30:00,30 ,       0,789.3699,585.7605,237.8446
sgpcmbeC1.c1,2006,0611:30:00,30 ,0.402626,871.0706,659.5699,255.7367
sgpcmbeC1.c1,2006,0612:30:00,30 ,1.955261,894.3106,660.2884,268.8029
sgpcmbeC1.c1,2006,0613:30:00,30 ,2.883301,866.8452,623.6199,257.9036
sgpcmbeC1.c1,2006,0614:30:00,30 ,74.01981,786.3485,584.3707,200.5822
sgpcmbeC1.c1,2006,0615:30:00,30 ,44.75778,657.6542,444.3497,199.8324
sgpcmbeC1.c1,2006,0616:30:00,30 ,3.166794,500.6694,370.2142,124.5939
sgpcmbeC1.c1,2006,0617:30:00,30 ,67.18129,317.8304,242.2228,61.98951
sgpcmbeC1.c1,2006,0618:30:00,30 ,9.555241,140.6895,91.27956,40.32051
sgpcmbeC1.c1,2006,0619:30:00,30 ,0.136246,19.10211,8.589914,6.164885
sgpcmbeC1.c1,2006,0620:30:00,30 ,       0,1.756504,0.562053,0.615472
sgpcmbeC1.c1,2006,0621:30:00,30 ,       0,1.094778,0.266478,0.364218
sgpcmbeC1.c1,2006,0622:30:00,30 ,       0,1.078803,0.218271,0.320434
sgpcmbeC1.c1,2006,0623:30:00,30 ,       0,0.978421,0.150838,0.272953