datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,03 0:30:00,30 ,       0,1.781762,0.233912,0.505158
sgpcmbeC1.c1,2006,03 1:30:00,30 ,       0,1.496821,0.249861,0.510552
sgpcmbeC1.c1,2006,03 2:30:00,31 ,       0,1.637568,0.155583,0.382663
sgpcmbeC1.c1,2006,03 3:30:00,31 ,       0,1.669776,0.221132, 0.41759
sgpcmbeC1.c1,2006,03 4:30:00,31 ,       0,1.666539,0.294688,0.532258
sgpcmbeC1.c1,2006,03 5:30:00,31 ,       0,1.670588,0.303968,0.547896
sgpcmbeC1.c1,2006,03 6:30:00,31 ,       0,29.54653,6.551986,8.481719
sgpcmbeC1.c1,2006,03 7:30:00,30 ,4.467238,71.74519,39.46029,22.55171
sgpcmbeC1.c1,2006,03 8:30:00,30 , 5.55748, 113.078, 50.1078, 26.6574
sgpcmbeC1.c1,2006,03 9:30:00,30 , 6.93995,146.3363,59.11615,35.53569
sgpcmbeC1.c1,2006,0310:30:00,30 ,10.77614,171.1666,68.63871,45.41457
sgpcmbeC1.c1,2006,0311:30:00,31 , 10.0947,222.5254,66.92077,57.89503
sgpcmbeC1.c1,2006,0312:30:00,31 ,3.280791,215.8741,58.58736,58.06252
sgpcmbeC1.c1,2006,0313:30:00,31 ,12.54756,268.3282,71.70555,68.33702
sgpcmbeC1.c1,2006,0314:30:00,31 ,9.892516,175.7087,65.46091,48.21639
sgpcmbeC1.c1,2006,0315:30:00,31 ,4.553285,147.6987,55.88016,35.06138
sgpcmbeC1.c1,2006,0316:30:00,31 ,3.297215,133.5994,55.63408,30.10653
sgpcmbeC1.c1,2006,0317:30:00,31 ,2.098277,81.99628,40.23232,24.51812
sgpcmbeC1.c1,2006,0318:30:00,31 ,       0,40.30885, 16.7689,10.98622
sgpcmbeC1.c1,2006,0319:30:00,31 ,       0,1.619193,0.320216,0.511905
sgpcmbeC1.c1,2006,0320:30:00,31 ,       0,1.790986,0.474387,0.677456
sgpcmbeC1.c1,2006,0321:30:00,31 ,       0,1.816774,0.339516,0.609869
sgpcmbeC1.c1,2006,0322:30:00,31 ,       0,  1.5791,0.218866,0.435726
sgpcmbeC1.c1,2006,0323:30:00,31 ,       0,1.581691,0.293181,0.512801