datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,06 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,06 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,06 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,06 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,06 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,06 5:30:00,30 , 0.20271,18.72985,12.72328,4.110989
sgpcmbeC1.c1,2001,06 6:30:00,30 ,18.44621,95.46004, 60.2931,19.39706
sgpcmbeC1.c1,2001,06 7:30:00,30 ,62.16141,196.8194,108.1553,40.24472
sgpcmbeC1.c1,2001,06 8:30:00,30 ,71.73228,293.7434,152.8602,65.60106
sgpcmbeC1.c1,2001,06 9:30:00,30 , 49.2341,366.6178,174.9085,89.44921
sgpcmbeC1.c1,2001,0610:30:00,30 ,6.847894,442.6405,221.8781, 118.849
sgpcmbeC1.c1,2001,0611:30:00,30 ,80.62663,533.8557,264.3092,143.2221
sgpcmbeC1.c1,2001,0612:30:00,30 ,79.20107,467.4493,244.5354, 125.462
sgpcmbeC1.c1,2001,0613:30:00,30 ,87.87221,450.2422,227.7282, 119.864
sgpcmbeC1.c1,2001,0614:30:00,30 ,77.36248,418.8332,209.3021, 107.736
sgpcmbeC1.c1,2001,0615:30:00,30 ,73.89887,409.4885,182.2136,88.54676
sgpcmbeC1.c1,2001,0616:30:00,30 ,72.12798,297.2978, 147.488,59.07001
sgpcmbeC1.c1,2001,0617:30:00,30 ,59.07857,178.8227, 110.706,34.49319
sgpcmbeC1.c1,2001,0618:30:00,30 ,19.80002,112.9728,61.81485,19.17106
sgpcmbeC1.c1,2001,0619:30:00,30 ,       0,29.48147,14.08313,7.357551
sgpcmbeC1.c1,2001,0620:30:00,29 ,       0,0.000156,5.391E-6,0.000029
sgpcmbeC1.c1,2001,0621:30:00,30 ,       0,0.057216,0.001907,0.010446
sgpcmbeC1.c1,2001,0622:30:00,29 ,       0,0.181245, 0.00625,0.033656
sgpcmbeC1.c1,2001,0623:30:00,29 ,       0,       0,       0,       0