datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,08 0:30:00,31 ,       0,0.177334, 0.00572, 0.03185
sgpcmbeC1.c1,1997,08 1:30:00,31 ,       0,0.090876,0.002956,0.016318
sgpcmbeC1.c1,1997,08 2:30:00,31 ,       0,0.000773, 0.00005,0.000192
sgpcmbeC1.c1,1997,08 3:30:00,31 ,       0,0.064873,0.004157, 0.01609
sgpcmbeC1.c1,1997,08 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,08 5:30:00,31 ,       0,2.642758,0.529895,0.650646
sgpcmbeC1.c1,1997,08 6:30:00,31 ,0.292693,16.40409,8.410024,5.342486
sgpcmbeC1.c1,1997,08 7:30:00,31 ,1.242358,27.70667,11.49179,6.382948
sgpcmbeC1.c1,1997,08 8:30:00,31 ,1.040878,43.41323,14.39168,8.711299
sgpcmbeC1.c1,1997,08 9:30:00,31 ,1.477902,49.44405,17.53995,13.57534
sgpcmbeC1.c1,1997,0810:30:00,31 ,2.824663,65.72446,22.78501,18.26021
sgpcmbeC1.c1,1997,0811:30:00,31 ,1.751165,60.73782,24.82222,19.43131
sgpcmbeC1.c1,1997,0812:30:00,31 ,0.826011,58.92704,22.76034,20.01104
sgpcmbeC1.c1,1997,0813:30:00,31 ,1.222823,63.31026,22.18881, 19.9942
sgpcmbeC1.c1,1997,0814:30:00,31 , 2.02365,58.87511,20.86286,16.32925
sgpcmbeC1.c1,1997,0815:30:00,31 ,3.506681,48.22545, 20.0149,14.21102
sgpcmbeC1.c1,1997,0816:30:00,31 ,2.374007,40.92667,19.34696,11.22459
sgpcmbeC1.c1,1997,0817:30:00,31 ,1.658679,32.03176,14.48068, 7.05873
sgpcmbeC1.c1,1997,0818:30:00,31 ,0.696757,17.24128,11.19174,3.679941
sgpcmbeC1.c1,1997,0819:30:00,31 ,       0,4.064898,1.307346,1.325708
sgpcmbeC1.c1,1997,0820:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0821:30:00,31 ,       0,0.009632,0.000311, 0.00173
sgpcmbeC1.c1,1997,0822:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0823:30:00,31 ,       0,       0,       0,       0