datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,01 0:30:00,21 ,       0,2.269232,0.518596,0.815662
sgpcmbeC1.c1,2007,01 1:30:00,20 ,       0,2.392128,0.585512,  0.8567
sgpcmbeC1.c1,2007,01 2:30:00,17 ,       0,2.195409,0.462585,0.756243
sgpcmbeC1.c1,2007,01 3:30:00,18 ,       0,1.623666, 0.27441,0.519922
sgpcmbeC1.c1,2007,01 4:30:00,15 ,       0,2.302858,0.537364,0.813026
sgpcmbeC1.c1,2007,01 5:30:00,16 ,       0,2.328322,0.586935,0.859233
sgpcmbeC1.c1,2007,01 6:30:00,22 ,       0,1.913093,0.265015,0.591033
sgpcmbeC1.c1,2007,01 7:30:00,31 ,       0,6.426022,1.611531, 1.58014
sgpcmbeC1.c1,2007,01 8:30:00,30 ,0.540969, 82.8848,28.65641,20.57241
sgpcmbeC1.c1,2007,01 9:30:00,31 ,1.596926,267.3901, 72.9302,58.68438
sgpcmbeC1.c1,2007,0110:30:00,31 ,4.322751,303.7085,109.0964,84.06893
sgpcmbeC1.c1,2007,0111:30:00,31 ,8.547894,346.0969,133.2536,95.23535
sgpcmbeC1.c1,2007,0112:30:00,31 ,11.23917,372.1284, 146.091,107.2382
sgpcmbeC1.c1,2007,0113:30:00,31 ,11.88352,358.0897,139.1694,88.81866
sgpcmbeC1.c1,2007,0114:30:00,31 ,15.75328,303.5912,119.3864,68.97463
sgpcmbeC1.c1,2007,0115:30:00,31 ,8.139668,218.7318,80.44814,50.39495
sgpcmbeC1.c1,2007,0116:30:00,31 ,2.557447,122.6956,40.85052,27.40255
sgpcmbeC1.c1,2007,0117:30:00,31 ,       0,25.70853,6.791458,6.401209
sgpcmbeC1.c1,2007,0118:30:00,27 ,       0,0.361537,0.025293,0.091299
sgpcmbeC1.c1,2007,0119:30:00,26 ,       0,2.792629,0.202087,0.583545
sgpcmbeC1.c1,2007,0120:30:00,20 ,       0,2.697652, 0.26438,0.717616
sgpcmbeC1.c1,2007,0121:30:00,22 ,       0,2.416566,0.360804,0.768564
sgpcmbeC1.c1,2007,0122:30:00,19 ,       0,2.196804,0.404096,0.812241
sgpcmbeC1.c1,2007,0123:30:00,20 ,       0,1.629932,0.161265,0.494326