datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,05 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 2:30:00,28 ,       0, 0.65672,0.023454,0.124108
sgpcmbeC1.c1,2004,05 3:30:00,28 ,       0,0.607587,  0.0217,0.114823
sgpcmbeC1.c1,2004,05 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 5:30:00,31 ,       0,31.15906,10.37457,7.699111
sgpcmbeC1.c1,2004,05 6:30:00,31 ,0.702006,181.6375,108.9339,51.75794
sgpcmbeC1.c1,2004,05 7:30:00,31 ,15.91713,388.7687,265.3011,113.8407
sgpcmbeC1.c1,2004,05 8:30:00,31 ,47.12833,589.7315,423.7747,166.9712
sgpcmbeC1.c1,2004,05 9:30:00,31 ,48.06603,778.3207,553.1022,222.3992
sgpcmbeC1.c1,2004,0510:30:00,31 ,56.03161,927.4114,711.1546, 232.071
sgpcmbeC1.c1,2004,0511:30:00,31 ,115.5201,1021.746,831.1565,226.0077
sgpcmbeC1.c1,2004,0512:30:00,31 ,71.43777,1057.855,835.6017,242.4953
sgpcmbeC1.c1,2004,0513:30:00,31 ,19.34266,994.8983,818.9893,242.4946
sgpcmbeC1.c1,2004,0514:30:00,31 ,16.69021,894.6737,731.1325,228.6193
sgpcmbeC1.c1,2004,0515:30:00,31 ,14.02577,752.5435,590.3019, 211.651
sgpcmbeC1.c1,2004,0516:30:00,31 ,35.43944,580.6442,445.4216,143.0034
sgpcmbeC1.c1,2004,0517:30:00,31 ,19.26609,369.1234,280.1725,88.78566
sgpcmbeC1.c1,2004,0518:30:00,31 ,16.60393,169.4227,106.0486,36.76634
sgpcmbeC1.c1,2004,0519:30:00,31 ,0.450916,20.97582,8.165245,5.452494
sgpcmbeC1.c1,2004,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0521:30:00,31 ,       0,0.306284, 0.00988, 0.05501
sgpcmbeC1.c1,2004,0522:30:00,30 ,       0,0.446117, 0.01825,0.082902
sgpcmbeC1.c1,2004,0523:30:00,31 ,       0,0.257563,0.008308, 0.04626