datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,01 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,01 7:30:00,29 ,       0,9.860867,3.167883,2.909161
sgpcmbeC1.c1,1998,01 8:30:00,29 ,4.612082,135.0531,60.86804,42.17467
sgpcmbeC1.c1,1998,01 9:30:00,29 ,7.803344,315.8824,161.0524,108.7934
sgpcmbeC1.c1,1998,0110:30:00,29 ,19.56555, 468.576,245.3677,166.1039
sgpcmbeC1.c1,1998,0111:30:00,29 ,25.32707,574.4034,303.5087,203.9986
sgpcmbeC1.c1,1998,0112:30:00,29 ,40.61284,620.8171,346.1945,216.7832
sgpcmbeC1.c1,1998,0113:30:00,29 ,35.95315,602.8288,324.1309,202.5445
sgpcmbeC1.c1,1998,0114:30:00,29 ,41.32455,524.9072,285.8595,170.1127
sgpcmbeC1.c1,1998,0115:30:00,29 ,29.85002, 392.184,200.8503,128.6957
sgpcmbeC1.c1,1998,0116:30:00,29 ,9.646256,220.1078,104.3644,73.17207
sgpcmbeC1.c1,1998,0117:30:00,29 ,0.703813,47.66362,17.16089,15.72164
sgpcmbeC1.c1,1998,0118:30:00,28 ,       0,0.469187,0.016757,0.088668
sgpcmbeC1.c1,1998,0119:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0120:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0121:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0122:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0123:30:00,27 ,       0,       0,       0,       0