datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,01 0:30:00,30 ,       0,2.635144,0.873713,0.831502
sgpcmbeC1.c1,2005,01 1:30:00,31 ,       0,2.385472,0.705183,0.641366
sgpcmbeC1.c1,2005,01 2:30:00,30 ,       0,2.616385,0.706442,0.739852
sgpcmbeC1.c1,2005,01 3:30:00,31 ,       0,2.273434,0.874047,0.702466
sgpcmbeC1.c1,2005,01 4:30:00,31 ,0.002078,2.232402,0.869244,0.731277
sgpcmbeC1.c1,2005,01 5:30:00,31 ,0.234397,2.298021,1.067014,0.616597
sgpcmbeC1.c1,2005,01 6:30:00,31 , 0.21876,2.363352,1.191406,0.534741
sgpcmbeC1.c1,2005,01 7:30:00,31 ,0.545496,4.406948,1.623037,0.881964
sgpcmbeC1.c1,2005,01 8:30:00,31 ,       0,98.85983, 32.0173,38.18383
sgpcmbeC1.c1,2005,01 9:30:00,31 ,0.010731,267.8679,  84.163,109.1703
sgpcmbeC1.c1,2005,0110:30:00,31 ,0.083305,417.8333,137.4887,172.2653
sgpcmbeC1.c1,2005,0111:30:00,31 ,0.209023,521.0479,174.2927,214.0361
sgpcmbeC1.c1,2005,0112:30:00,31 ,0.110336, 563.664,179.3904,221.1316
sgpcmbeC1.c1,2005,0113:30:00,31 ,0.049187,544.1719,178.9872,226.2129
sgpcmbeC1.c1,2005,0114:30:00,31 ,0.027855,463.8442, 150.316,186.2778
sgpcmbeC1.c1,2005,0115:30:00,31 ,       0,329.9727,101.1927,130.6907
sgpcmbeC1.c1,2005,0116:30:00,31 , 0.00057, 162.229,45.11897,55.32427
sgpcmbeC1.c1,2005,0117:30:00,31 ,0.054773,21.70538, 5.21148,6.990357
sgpcmbeC1.c1,2005,0118:30:00,31 ,  0.0873,2.212481,1.246551,0.481894
sgpcmbeC1.c1,2005,0119:30:00,31 ,       0,2.453217,1.023279,0.645054
sgpcmbeC1.c1,2005,0120:30:00,31 ,       0,1.958426,0.832884,0.680727
sgpcmbeC1.c1,2005,0121:30:00,31 ,       0,1.965569,0.842851,0.681811
sgpcmbeC1.c1,2005,0122:30:00,30 ,       0,2.033731,0.722906,0.613313
sgpcmbeC1.c1,2005,0123:30:00,31 ,       0,2.455374,0.788705,0.729636