datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,11 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,11 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,11 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,11 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,11 4:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,11 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,11 6:30:00,30 ,       0,0.010362,0.000345,0.001892
sgpcmbeC1.c1,2002,11 7:30:00,30 , 0.63244,18.73348,8.946619,5.270663
sgpcmbeC1.c1,2002,11 8:30:00,30 ,2.645412,59.82919,39.37038,  16.999
sgpcmbeC1.c1,2002,11 9:30:00,30 ,4.909054,94.05631,69.03578, 28.0811
sgpcmbeC1.c1,2002,1110:30:00,30 ,6.213865,129.5195,91.52051,32.66178
sgpcmbeC1.c1,2002,1111:30:00,30 ,8.205502,137.6612,103.5855,39.21418
sgpcmbeC1.c1,2002,1112:30:00,30 ,9.053033,133.9906,103.9592,40.44828
sgpcmbeC1.c1,2002,1113:30:00,30 ,8.209082,133.5025,96.67328,37.66781
sgpcmbeC1.c1,2002,1114:30:00,30 ,6.390428,110.2996,83.97283,32.00058
sgpcmbeC1.c1,2002,1115:30:00,30 ,4.218428,80.69485,59.54368,22.30755
sgpcmbeC1.c1,2002,1116:30:00,30 ,1.774721,39.23046,26.31366,10.44543
sgpcmbeC1.c1,2002,1117:30:00,30 ,0.007706,4.611447,1.641738,1.432612
sgpcmbeC1.c1,2002,1118:30:00,30 ,       0,0.039287, 0.00131,0.007173
sgpcmbeC1.c1,2002,1119:30:00,29 ,       0,0.159722,0.005508, 0.02966
sgpcmbeC1.c1,2002,1120:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1121:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1122:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1123:30:00,28 ,       0,       0,       0,       0