datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,09 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,09 2:30:00,30 ,       0,0.123264,0.004109,0.022505
sgpcmbeC1.c1,2001,09 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,09 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,09 5:30:00,30 ,       0,0.118357,0.005254,0.022532
sgpcmbeC1.c1,2001,09 6:30:00,30 ,0.726137,15.92429, 6.64914,4.678246
sgpcmbeC1.c1,2001,09 7:30:00,30 ,1.671478,64.47944,35.35865,20.62788
sgpcmbeC1.c1,2001,09 8:30:00,29 , 0.54375,108.8724,68.28458,33.05094
sgpcmbeC1.c1,2001,09 9:30:00,30 ,  2.8332,138.5198,92.34716,38.66687
sgpcmbeC1.c1,2001,0910:30:00,30 ,6.978662,164.3742,115.1226,41.70602
sgpcmbeC1.c1,2001,0911:30:00,30 , 12.2905,173.1102,128.1428,40.90903
sgpcmbeC1.c1,2001,0912:30:00,30 ,45.20752, 184.935,132.2257,35.24371
sgpcmbeC1.c1,2001,0913:30:00,30 ,43.40459,170.7727,130.1045,28.50352
sgpcmbeC1.c1,2001,0914:30:00,30 ,15.43265, 165.868,114.3762,32.45746
sgpcmbeC1.c1,2001,0915:30:00,30 ,6.987014,136.6474,90.94551,33.27571
sgpcmbeC1.c1,2001,0916:30:00,30 ,0.945359,101.9946,62.27984,26.60702
sgpcmbeC1.c1,2001,0917:30:00,30 ,1.512288,60.10538,30.80128,14.89042
sgpcmbeC1.c1,2001,0918:30:00,30 , 0.30204,17.82362,4.529545,4.906294
sgpcmbeC1.c1,2001,0919:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0920:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0921:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0922:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0923:30:00,30 ,       0,       0,       0,       0