datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,07 0:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 1:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 5:30:00,27 ,1.621098,30.56402,13.42234, 7.46957
sgpcmbeC1.c1,2006,07 6:30:00,27 ,22.16669,178.2112,118.7839,40.13716
sgpcmbeC1.c1,2006,07 7:30:00,27 ,64.39009,359.3413, 278.582,82.53352
sgpcmbeC1.c1,2006,07 8:30:00,28 ,136.0253,562.8945,453.0342,119.7378
sgpcmbeC1.c1,2006,07 9:30:00,28 ,131.0595,721.8726,595.2131,175.3236
sgpcmbeC1.c1,2006,0710:30:00,28 ,68.46296,869.1885,717.8039,233.0216
sgpcmbeC1.c1,2006,0711:30:00,28 , 103.824,959.7286,786.2991,239.5067
sgpcmbeC1.c1,2006,0712:30:00,28 , 111.335,984.0743,846.1237,196.1949
sgpcmbeC1.c1,2006,0713:30:00,28 ,103.2477,962.2367,786.3992,241.3755
sgpcmbeC1.c1,2006,0714:30:00,28 ,211.5913,912.7097,718.3969,219.1771
sgpcmbeC1.c1,2006,0715:30:00,28 ,116.1298,750.7025,643.0659,167.0497
sgpcmbeC1.c1,2006,0716:30:00,28 ,120.8283,610.9669,498.8489,126.9348
sgpcmbeC1.c1,2006,0717:30:00,28 ,58.19851,384.9612,325.4543, 79.3551
sgpcmbeC1.c1,2006,0718:30:00,28 ,15.01506, 222.875,147.1166,45.34289
sgpcmbeC1.c1,2006,0719:30:00,28 ,0.985252,55.31291,21.85662,10.52219
sgpcmbeC1.c1,2006,0720:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0721:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0722:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0723:30:00,27 ,       0,       0,       0,       0