datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,03 0:30:00,25 ,       0,0.409203,0.038104,0.111253
sgpcmbeC1.c1,2006,03 1:30:00,27 ,       0,0.917303,0.077288,  0.2162
sgpcmbeC1.c1,2006,03 2:30:00,28 ,       0,1.042502,0.046072,0.200798
sgpcmbeC1.c1,2006,03 3:30:00,27 ,       0,1.272838,0.051464, 0.24484
sgpcmbeC1.c1,2006,03 4:30:00,26 ,       0,0.988836,0.064724,0.220661
sgpcmbeC1.c1,2006,03 5:30:00,27 ,       0,1.190383,0.101183, 0.29894
sgpcmbeC1.c1,2006,03 6:30:00,31 ,       0,9.655564,2.065606,2.890892
sgpcmbeC1.c1,2006,03 7:30:00,30 ,1.420523,63.22855,25.94251,19.85687
sgpcmbeC1.c1,2006,03 8:30:00,30 ,4.666749,207.4965,65.95769, 44.7676
sgpcmbeC1.c1,2006,03 9:30:00,30 ,5.856752,214.6653,95.11076,57.04989
sgpcmbeC1.c1,2006,0310:30:00,30 ,8.312565,358.4787,128.0908,76.89794
sgpcmbeC1.c1,2006,0311:30:00,31 ,7.501615,207.1534,133.5276, 69.1218
sgpcmbeC1.c1,2006,0312:30:00,31 ,7.190384,209.5155,134.3689,74.76368
sgpcmbeC1.c1,2006,0313:30:00,31 ,8.559764, 205.487,137.1272,69.22251
sgpcmbeC1.c1,2006,0314:30:00,31 ,6.401073,188.2395,121.9977,62.31592
sgpcmbeC1.c1,2006,0315:30:00,31 ,2.546445,159.0013,94.57529,57.04127
sgpcmbeC1.c1,2006,0316:30:00,31 ,2.603667,116.7338,67.86363,40.80982
sgpcmbeC1.c1,2006,0317:30:00,31 ,0.759297, 63.0292,32.67123,21.23183
sgpcmbeC1.c1,2006,0318:30:00,31 ,       0,14.11582,5.888967,4.614385
sgpcmbeC1.c1,2006,0319:30:00,21 ,       0,0.800629,0.049204,0.175729
sgpcmbeC1.c1,2006,0320:30:00,25 ,       0, 0.41157,0.016463,0.082314
sgpcmbeC1.c1,2006,0321:30:00,26 ,       0,0.008392,0.000323,0.001646
sgpcmbeC1.c1,2006,0322:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0323:30:00,26 ,       0,0.621005,0.029282,0.122878