datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,09 0:30:00,30 ,       0,0.218057,0.009775,0.040413
sgpcmbeC1.c1,2001,09 1:30:00,30 ,       0,0.586539,    0.03, 0.11838
sgpcmbeC1.c1,2001,09 2:30:00,30 ,       0,1.267233,0.047878,0.231851
sgpcmbeC1.c1,2001,09 3:30:00,30 ,       0,0.421659,0.014055,0.076984
sgpcmbeC1.c1,2001,09 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,09 5:30:00,30 ,       0,0.552278,0.059998, 0.14027
sgpcmbeC1.c1,2001,09 6:30:00,30 ,5.535525,51.86983,25.64248,13.50805
sgpcmbeC1.c1,2001,09 7:30:00,30 ,9.082762,240.9941,147.9748,70.21924
sgpcmbeC1.c1,2001,09 8:30:00,29 , 5.47324,463.9152,313.9275,133.8455
sgpcmbeC1.c1,2001,09 9:30:00,30 ,15.32337, 642.897,465.6113,178.0163
sgpcmbeC1.c1,2001,0910:30:00,30 ,50.84698,794.4232, 611.533, 208.084
sgpcmbeC1.c1,2001,0911:30:00,30 ,80.08128,881.9146,705.4373,216.9771
sgpcmbeC1.c1,2001,0912:30:00,30 ,274.1498,926.3753,738.8869,189.3761
sgpcmbeC1.c1,2001,0913:30:00,30 ,271.7535,878.2507,715.4174,155.6336
sgpcmbeC1.c1,2001,0914:30:00,30 ,104.1787,824.6293,617.6699,168.1416
sgpcmbeC1.c1,2001,0915:30:00,30 , 47.7449,647.0678,468.1322,162.7955
sgpcmbeC1.c1,2001,0916:30:00,30 ,5.285914,450.3897,296.6904,118.3926
sgpcmbeC1.c1,2001,0917:30:00,30 ,7.451406,239.0945,133.3983,57.67257
sgpcmbeC1.c1,2001,0918:30:00,30 ,3.523466,54.06056, 17.5064,14.46959
sgpcmbeC1.c1,2001,0919:30:00,30 ,       0,0.732316,0.065592,0.157114
sgpcmbeC1.c1,2001,0920:30:00,30 ,       0, 1.37088,0.052511,0.251558
sgpcmbeC1.c1,2001,0921:30:00,30 ,       0,0.596321,0.025758,0.110111
sgpcmbeC1.c1,2001,0922:30:00,30 ,       0,0.665966,0.035213,0.129941
sgpcmbeC1.c1,2001,0923:30:00,30 ,       0,0.706564,0.055116,0.148762