datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,03 0:30:00,31 ,       0,1.421418,0.188726,0.364278
sgpcmbeC1.c1,2005,03 1:30:00,31 ,       0,1.736091,0.177223,0.397653
sgpcmbeC1.c1,2005,03 2:30:00,31 ,       0,1.590414,0.187544,0.435504
sgpcmbeC1.c1,2005,03 3:30:00,31 ,       0,1.528857,0.128048,0.346668
sgpcmbeC1.c1,2005,03 4:30:00,31 ,       0,0.307412,0.026771, 0.08344
sgpcmbeC1.c1,2005,03 5:30:00,31 ,       0,2.511832,0.178522,0.532136
sgpcmbeC1.c1,2005,03 6:30:00,31 ,0.613053,20.22716,5.139422,4.754679
sgpcmbeC1.c1,2005,03 7:30:00,31 ,6.386137,130.3118,48.54247,28.38533
sgpcmbeC1.c1,2005,03 8:30:00,30 ,24.97353,205.0917,93.87439,43.06306
sgpcmbeC1.c1,2005,03 9:30:00,30 ,67.50083,318.9432,152.8357,82.34238
sgpcmbeC1.c1,2005,0310:30:00,30 ,65.83074,390.5278,191.9094,105.3988
sgpcmbeC1.c1,2005,0311:30:00,30 ,80.87043,456.5762,219.2405,126.1109
sgpcmbeC1.c1,2005,0312:30:00,30 , 90.0095,568.3052,242.5213,136.3538
sgpcmbeC1.c1,2005,0313:30:00,30 ,88.85974,  474.42,237.2375, 104.956
sgpcmbeC1.c1,2005,0314:30:00,31 ,89.56329,575.1854,235.0247,121.2664
sgpcmbeC1.c1,2005,0315:30:00,31 ,43.24112,404.0018,188.7524,88.49343
sgpcmbeC1.c1,2005,0316:30:00,31 ,36.05605,272.6249,129.5566,55.84262
sgpcmbeC1.c1,2005,0317:30:00,31 ,11.16722,158.6868,68.65382,29.96222
sgpcmbeC1.c1,2005,0318:30:00,31 ,3.655532,31.43853, 14.3719, 7.26429
sgpcmbeC1.c1,2005,0319:30:00,31 ,       0,2.418865,0.335864,0.596485
sgpcmbeC1.c1,2005,0320:30:00,31 ,       0,1.524805,0.250084,0.435141
sgpcmbeC1.c1,2005,0321:30:00,31 ,       0,1.613838,0.219837,0.410159
sgpcmbeC1.c1,2005,0322:30:00,31 ,       0,1.696222,0.197198, 0.44837
sgpcmbeC1.c1,2005,0323:30:00,31 ,       0, 2.26188,0.279455,0.523839