datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,03 0:30:00,19 ,       0,31.01234,2.369246, 6.97342
sgpcmbeC1.c1,2002,03 1:30:00,19 ,       0,29.63239,2.324715,6.696897
sgpcmbeC1.c1,2002,03 2:30:00,19 ,       0,16.71393,1.591934, 3.78182
sgpcmbeC1.c1,2002,03 3:30:00,18 ,       0,25.76106,2.811387,6.245147
sgpcmbeC1.c1,2002,03 4:30:00,18 ,  0.0234,27.98642,3.169302, 6.67332
sgpcmbeC1.c1,2002,03 5:30:00,17 ,       0,26.74736,3.031124,6.801274
sgpcmbeC1.c1,2002,03 6:30:00,17 ,       0,39.94968,  5.7345,12.05838
sgpcmbeC1.c1,2002,03 7:30:00,17 ,       0,27.18918,4.530319,9.047845
sgpcmbeC1.c1,2002,03 8:30:00,17 ,       0,22.07672,2.263653,5.315608
sgpcmbeC1.c1,2002,03 9:30:00,21 ,       0,70.77299,9.510699,18.83769
sgpcmbeC1.c1,2002,0310:30:00,22 ,       0,76.62363,11.02088, 23.4528
sgpcmbeC1.c1,2002,0311:30:00,22 ,       0,99.14222,14.90369,28.69861
sgpcmbeC1.c1,2002,0312:30:00,23 ,       0,260.5243,19.33615,  55.269
sgpcmbeC1.c1,2002,0313:30:00,23 ,       0,56.07937,6.599777, 13.3082
sgpcmbeC1.c1,2002,0314:30:00,22 ,       0,156.1893,10.59317,33.20158
sgpcmbeC1.c1,2002,0315:30:00,21 ,0.187158,133.4216,10.80205,29.31405
sgpcmbeC1.c1,2002,0316:30:00,22 ,0.056053,58.53204,6.821372,13.76783
sgpcmbeC1.c1,2002,0317:30:00,23 ,0.069109,234.2662,16.26395,48.83459
sgpcmbeC1.c1,2002,0318:30:00,23 ,0.891274,93.43392,11.29609,22.38117
sgpcmbeC1.c1,2002,0319:30:00,23 ,0.737871,613.8349,  34.466,127.0466
sgpcmbeC1.c1,2002,0320:30:00,23 ,0.032807,223.6733,18.68467,47.99296
sgpcmbeC1.c1,2002,0321:30:00,23 ,       0,240.6256, 18.1792,51.07074
sgpcmbeC1.c1,2002,0322:30:00,21 ,       0,61.70702,6.203515,14.74566
sgpcmbeC1.c1,2002,0323:30:00,20 ,       0,30.54573,2.778221,6.906521