datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,09 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,09 6:30:00,30 ,       0,48.88447,20.71137,15.88802
sgpcmbeC1.c1,1999,09 7:30:00,30 ,7.374616,232.5889,132.6516,74.22228
sgpcmbeC1.c1,1999,09 8:30:00,30 ,37.34581,444.9562, 282.988,141.1287
sgpcmbeC1.c1,1999,09 9:30:00,30 ,55.53411,629.3334,433.5292,204.3251
sgpcmbeC1.c1,1999,0910:30:00,30 ,65.58393,770.2963,529.7235,253.0763
sgpcmbeC1.c1,1999,0911:30:00,30 ,56.22705,863.0278,592.6704,258.8788
sgpcmbeC1.c1,1999,0912:30:00,30 ,83.99178,935.5431,606.7906,273.4359
sgpcmbeC1.c1,1999,0913:30:00,30 , 74.7991, 853.183,572.9419,251.9324
sgpcmbeC1.c1,1999,0914:30:00,30 ,59.07803,754.2183,532.2051,208.1634
sgpcmbeC1.c1,1999,0915:30:00,30 ,49.54405,623.3307,435.2268,161.9346
sgpcmbeC1.c1,1999,0916:30:00,30 ,28.91645,435.9434,278.5988, 121.513
sgpcmbeC1.c1,1999,0917:30:00,30 ,5.885731,220.5598,116.9219,58.31953
sgpcmbeC1.c1,1999,0918:30:00,30 ,       0,49.55808, 17.2328, 14.8213
sgpcmbeC1.c1,1999,0919:30:00,30 ,       0,0.126115,0.004204,0.023025
sgpcmbeC1.c1,1999,0920:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0921:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0922:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0923:30:00,30 ,       0,       0,       0,       0