datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,03 0:30:00,26 ,       0,2.763111,0.493567,0.751474
sgpcmbeC1.c1,2007,03 1:30:00,25 ,       0, 2.68078, 0.46188,0.709879
sgpcmbeC1.c1,2007,03 2:30:00,26 ,       0,2.707011,0.572607,0.810199
sgpcmbeC1.c1,2007,03 3:30:00,27 ,       0,2.638063,0.564406,0.874999
sgpcmbeC1.c1,2007,03 4:30:00,27 ,       0,2.525953,0.572453,0.862642
sgpcmbeC1.c1,2007,03 5:30:00,26 ,       0,2.010432,0.368251,0.691973
sgpcmbeC1.c1,2007,03 6:30:00,27 ,       0, 4.60705,0.644861,0.878749
sgpcmbeC1.c1,2007,03 7:30:00,27 , 0.00069,108.0611,16.77676,25.66838
sgpcmbeC1.c1,2007,03 8:30:00,24 ,0.000247,242.5558,87.82413,94.75729
sgpcmbeC1.c1,2007,03 9:30:00,26 ,0.230125, 459.363,176.1067,190.2275
sgpcmbeC1.c1,2007,0310:30:00,26 ,0.038303,  644.15,267.1709,259.7002
sgpcmbeC1.c1,2007,0311:30:00,27 ,0.008692,743.1927,363.9817,309.1144
sgpcmbeC1.c1,2007,0312:30:00,27 ,0.112719, 761.983,383.2339,315.6229
sgpcmbeC1.c1,2007,0313:30:00,27 ,0.000172,735.5562,372.6145,308.2731
sgpcmbeC1.c1,2007,0314:30:00,27 ,0.049746,636.4375,311.3763,261.5418
sgpcmbeC1.c1,2007,0315:30:00,28 ,0.036886,487.8869,237.7302,186.0908
sgpcmbeC1.c1,2007,0316:30:00,27 ,0.094141,301.3723,141.6552,120.7873
sgpcmbeC1.c1,2007,0317:30:00,29 ,       0,140.5195,52.74484,47.25236
sgpcmbeC1.c1,2007,0318:30:00,29 ,0.096018,22.66272,3.305416,4.544439
sgpcmbeC1.c1,2007,0319:30:00,28 ,       0,3.211429,0.650683, 0.94278
sgpcmbeC1.c1,2007,0320:30:00,28 ,       0,3.016648,0.583096,0.834566
sgpcmbeC1.c1,2007,0321:30:00,26 ,       0,3.088022,0.518602,0.777697
sgpcmbeC1.c1,2007,0322:30:00,26 ,       0,2.974389, 0.47168,0.737607
sgpcmbeC1.c1,2007,0323:30:00,26 ,       0,3.077844,0.499915,0.794771