datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,01 0:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 1:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 2:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 3:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 4:30:00,13 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 5:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 6:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 7:30:00,31 ,       0,7.345212,1.585914,2.166334
sgpcmbeC1.c1,2007,01 8:30:00,31 ,       0,51.72475,23.32456,20.61011
sgpcmbeC1.c1,2007,01 9:30:00,31 ,0.001087,107.6506,30.80831,28.62162
sgpcmbeC1.c1,2007,0110:30:00,31 ,       0,99.22359,33.24435,30.26828
sgpcmbeC1.c1,2007,0111:30:00,31 , 0.00222,176.4805,40.41102,47.04253
sgpcmbeC1.c1,2007,0112:30:00,31 ,0.005585,199.6838,30.13872,44.07191
sgpcmbeC1.c1,2007,0113:30:00,31 ,0.103791,206.4813,37.01559, 46.5637
sgpcmbeC1.c1,2007,0114:30:00,31 ,0.007428,166.1026,40.83992,38.79451
sgpcmbeC1.c1,2007,0115:30:00,31 ,       0,97.74381,38.01962,27.87226
sgpcmbeC1.c1,2007,0116:30:00,31 ,       0,76.25788,27.99566,22.27279
sgpcmbeC1.c1,2007,0117:30:00,31 ,       0,27.43209,8.267516,9.478338
sgpcmbeC1.c1,2007,0118:30:00,27 ,       0,1.187401,0.043978,0.228515
sgpcmbeC1.c1,2007,0119:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0120:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0121:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0122:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0123:30:00,20 ,       0,       0,       0,       0