datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,01 0:30:00,30 ,       0,  0.9677, 0.11182,0.262842
sgpcmbeC1.c1,2005,01 1:30:00,31 ,       0,0.734777,0.057792,0.163947
sgpcmbeC1.c1,2005,01 2:30:00,30 ,       0,1.562228,0.096543, 0.32983
sgpcmbeC1.c1,2005,01 3:30:00,31 ,       0,0.536355,0.039361,0.119435
sgpcmbeC1.c1,2005,01 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,01 5:30:00,31 ,       0,0.359088,0.023348,0.077503
sgpcmbeC1.c1,2005,01 6:30:00,31 ,       0, 0.91337,0.036418,0.167293
sgpcmbeC1.c1,2005,01 7:30:00,31 ,       0,7.539363, 3.69045,2.344518
sgpcmbeC1.c1,2005,01 8:30:00,31 ,9.787603,76.19188,37.44414,17.92309
sgpcmbeC1.c1,2005,01 9:30:00,31 ,12.07702,167.7447, 80.7253,41.47763
sgpcmbeC1.c1,2005,0110:30:00,31 ,26.82988,249.9387,118.0006,59.97855
sgpcmbeC1.c1,2005,0111:30:00,31 ,33.86025,315.5709,151.7187,83.01251
sgpcmbeC1.c1,2005,0112:30:00,31 , 48.5912,392.4968,178.6179,98.05477
sgpcmbeC1.c1,2005,0113:30:00,31 ,38.90849,305.1986,163.1324,86.74876
sgpcmbeC1.c1,2005,0114:30:00,31 , 25.6284,277.9552,128.9215,63.46399
sgpcmbeC1.c1,2005,0115:30:00,31 ,21.65217,217.1164,100.5282,50.76471
sgpcmbeC1.c1,2005,0116:30:00,31 , 6.56107,112.3123,54.71909,25.62261
sgpcmbeC1.c1,2005,0117:30:00,31 ,0.419513,35.15355,13.52057,8.534063
sgpcmbeC1.c1,2005,0118:30:00,31 ,       0,2.400039,0.289014,0.669052
sgpcmbeC1.c1,2005,0119:30:00,31 ,       0,1.773971,0.131718,0.374385
sgpcmbeC1.c1,2005,0120:30:00,31 ,       0,1.593842,0.115578,0.335904
sgpcmbeC1.c1,2005,0121:30:00,31 ,       0,1.920557,0.148637,0.400376
sgpcmbeC1.c1,2005,0122:30:00,30 ,       0,1.163993,0.087283,0.269514
sgpcmbeC1.c1,2005,0123:30:00,31 ,       0,1.420756,0.080652,0.269252