datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,04 0:30:00,28 ,       0,0.063374,0.003925,0.014592
sgpcmbeC1.c1,2004,04 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 2:30:00,28 ,       0, 0.17829,0.006569,0.033671
sgpcmbeC1.c1,2004,04 3:30:00,28 ,       0,0.005184,0.000185, 0.00098
sgpcmbeC1.c1,2004,04 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 5:30:00,28 ,       0,2.665695,0.431849,0.755048
sgpcmbeC1.c1,2004,04 6:30:00,28 ,0.264297,14.78412,7.116111,4.635759
sgpcmbeC1.c1,2004,04 7:30:00,28 ,0.939236,24.62758, 10.1923,5.974383
sgpcmbeC1.c1,2004,04 8:30:00,28 ,2.103451,35.89658,12.87147,8.110547
sgpcmbeC1.c1,2004,04 9:30:00,29 ,1.867215,28.75179,9.989587,5.381832
sgpcmbeC1.c1,2004,0410:30:00,29 ,3.597746,47.34443,14.83993, 12.1194
sgpcmbeC1.c1,2004,0411:30:00,29 ,1.707695,42.67381,16.29152,14.45252
sgpcmbeC1.c1,2004,0412:30:00,29 ,0.308151,60.26543,16.49914,17.32799
sgpcmbeC1.c1,2004,0413:30:00,29 ,2.238139,47.27812,16.18638,13.46514
sgpcmbeC1.c1,2004,0414:30:00,29 ,2.216219,50.82747,17.27896,13.90385
sgpcmbeC1.c1,2004,0415:30:00,29 ,2.741328,42.67123,15.30531,9.318131
sgpcmbeC1.c1,2004,0416:30:00,29 ,2.404838,34.84335,16.86532,9.643557
sgpcmbeC1.c1,2004,0417:30:00,29 ,1.006651, 21.0389,11.05882,6.112732
sgpcmbeC1.c1,2004,0418:30:00,29 ,       0,16.09395,7.404656,4.358982
sgpcmbeC1.c1,2004,0419:30:00,29 ,       0, 0.94485,0.149247,0.292862
sgpcmbeC1.c1,2004,0420:30:00,28 ,       0,0.031616,0.001129,0.005975
sgpcmbeC1.c1,2004,0421:30:00,28 ,       0,0.081896,0.002925,0.015477
sgpcmbeC1.c1,2004,0422:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0423:30:00,28 ,       0,0.148611,0.005943,0.028162