datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,07 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 5:30:00,31 ,       0,23.53828,14.27985,6.620503
sgpcmbeC1.c1,2003,07 6:30:00,31 ,  8.0734,79.63231,46.11607,14.87043
sgpcmbeC1.c1,2003,07 7:30:00,31 ,25.14664,134.2417,70.00419,22.80396
sgpcmbeC1.c1,2003,07 8:30:00,31 ,26.06695,177.5536,69.11075,29.73505
sgpcmbeC1.c1,2003,07 9:30:00,31 ,31.55208,225.6647,76.11882,51.92128
sgpcmbeC1.c1,2003,0710:30:00,31 ,24.41968,301.0833,73.50008,69.38899
sgpcmbeC1.c1,2003,0711:30:00,31 ,14.32412, 275.819,87.84556,94.16752
sgpcmbeC1.c1,2003,0712:30:00,31 ,2.750416,338.9037,88.24851,110.6313
sgpcmbeC1.c1,2003,0713:30:00,31 ,9.795267, 405.751,141.8662,128.7587
sgpcmbeC1.c1,2003,0714:30:00,31 ,21.33302,372.2953,157.2207,117.7992
sgpcmbeC1.c1,2003,0715:30:00,31 ,40.99062,267.5494,120.2519,77.64068
sgpcmbeC1.c1,2003,0716:30:00,31 ,49.11596,318.5447,99.51878,69.53001
sgpcmbeC1.c1,2003,0717:30:00,31 ,31.32613,174.5861,73.89004,30.41031
sgpcmbeC1.c1,2003,0718:30:00,31 ,12.51839,101.6197,57.35343,17.32085
sgpcmbeC1.c1,2003,0719:30:00,31 ,7.393066,35.99369, 21.6539,7.102634
sgpcmbeC1.c1,2003,0720:30:00,31 ,       0,1.425026,0.045969,0.255942
sgpcmbeC1.c1,2003,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0723:30:00,31 ,       0,       0,       0,       0