datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2000,09 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,09 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,09 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,09 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,09 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,09 6:30:00,29 ,2.108005,28.95336,18.19267,7.492053
sgpcmbeC1.c1,2000,09 7:30:00,29 ,15.44608, 125.372,70.53597,27.19968
sgpcmbeC1.c1,2000,09 8:30:00,29 ,34.23719,260.3312,111.0287,52.15123
sgpcmbeC1.c1,2000,09 9:30:00,29 ,62.10547,269.4369,128.7225,56.85846
sgpcmbeC1.c1,2000,0910:30:00,29 ,66.57301,357.8852,148.8705,71.24848
sgpcmbeC1.c1,2000,0911:30:00,29 ,70.17345,  366.09,153.9451,71.54105
sgpcmbeC1.c1,2000,0912:30:00,29 ,70.24243,328.4883,162.0745,69.38544
sgpcmbeC1.c1,2000,0913:30:00,29 ,71.54272, 359.338,168.6333,81.85722
sgpcmbeC1.c1,2000,0914:30:00,29 ,69.95611,328.5918,149.7585,65.10174
sgpcmbeC1.c1,2000,0915:30:00,29 ,63.60517,228.9823,128.9516, 45.6663
sgpcmbeC1.c1,2000,0916:30:00,29 ,42.20214,161.2058,98.73006,34.35326
sgpcmbeC1.c1,2000,0917:30:00,29 ,17.81203,101.9814,62.09968,22.73945
sgpcmbeC1.c1,2000,0918:30:00,29 ,0.231026,35.78963,15.31319,8.935389
sgpcmbeC1.c1,2000,0919:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,0920:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,0921:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,0922:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,0923:30:00,29 ,       0,       0,       0,       0