datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,03 0:30:00,29 ,       0,2.481373,1.163739,0.895858
sgpcmbeC1.c1,2004,03 1:30:00,29 ,       0,2.225596,1.085578, 0.84753
sgpcmbeC1.c1,2004,03 2:30:00,30 ,       0, 2.40384,1.065066,0.823893
sgpcmbeC1.c1,2004,03 3:30:00,31 ,       0,2.948816,1.033544,0.828396
sgpcmbeC1.c1,2004,03 4:30:00,30 ,       0, 2.47843,0.979329,0.852352
sgpcmbeC1.c1,2004,03 5:30:00,30 ,       0,2.548109,1.090373,0.844023
sgpcmbeC1.c1,2004,03 6:30:00,31 ,       0,17.88715,2.417959,4.037809
sgpcmbeC1.c1,2004,03 7:30:00,31 , 0.09601,167.3892,49.37018,50.11968
sgpcmbeC1.c1,2004,03 8:30:00,31 ,0.099876,373.3138,158.8509,131.6688
sgpcmbeC1.c1,2004,03 9:30:00,31 ,0.102928,558.5381,276.7068, 218.895
sgpcmbeC1.c1,2004,0310:30:00,31 ,0.321528,691.3768, 366.123,283.3266
sgpcmbeC1.c1,2004,0311:30:00,31 ,0.104775,786.2247,435.6451,326.9802
sgpcmbeC1.c1,2004,0312:30:00,31 ,0.145847,835.8229,478.4172,  336.73
sgpcmbeC1.c1,2004,0313:30:00,31 ,0.037716,796.9675,463.5973,309.0687
sgpcmbeC1.c1,2004,0314:30:00,31 ,0.168205,687.1669, 405.195,274.9728
sgpcmbeC1.c1,2004,0315:30:00,31 ,0.225925, 552.526,295.7923,229.1752
sgpcmbeC1.c1,2004,0316:30:00,31 ,0.038876,372.9817,181.5933,147.7872
sgpcmbeC1.c1,2004,0317:30:00,31 ,0.051041,173.7497,77.44477,64.14998
sgpcmbeC1.c1,2004,0318:30:00,31 ,0.064059,23.78152,7.311585,7.403702
sgpcmbeC1.c1,2004,0319:30:00,31 ,       0,2.552998,0.853054,  0.9825
sgpcmbeC1.c1,2004,0320:30:00,31 ,       0,2.839411,1.010534,1.014907
sgpcmbeC1.c1,2004,0321:30:00,31 ,       0,2.675495,1.073072, 0.92484
sgpcmbeC1.c1,2004,0322:30:00,31 ,       0,2.784597,1.084992,0.919617
sgpcmbeC1.c1,2004,0323:30:00,29 ,       0,2.762275,1.112277,0.883091