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 ,       0,3.266786,0.782599,0.992247
sgpcmbeC1.c1,1998,01 8:30:00,29 ,0.780072, 39.5413,14.63102,12.14382
sgpcmbeC1.c1,1998,01 9:30:00,29 ,1.484158,71.20151,35.08768,26.25295
sgpcmbeC1.c1,1998,0110:30:00,29 ,3.255184,104.0392,50.71744,37.87179
sgpcmbeC1.c1,1998,0111:30:00,29 ,3.290145,124.0013,61.39745,45.10314
sgpcmbeC1.c1,1998,0112:30:00,29 ,5.206481,132.1758,69.73926,48.04805
sgpcmbeC1.c1,1998,0113:30:00,29 ,4.207907,128.1315,65.77918,45.47982
sgpcmbeC1.c1,1998,0114:30:00,29 ,5.007485,114.0877,59.10005,39.20961
sgpcmbeC1.c1,1998,0115:30:00,29 ,4.295821,89.38039, 43.2469,30.84108
sgpcmbeC1.c1,1998,0116:30:00,29 , 1.35727,53.69194,23.44016,18.54874
sgpcmbeC1.c1,1998,0117:30:00,29 ,0.020159,15.43959,4.633621,5.198254
sgpcmbeC1.c1,1998,0118:30:00,28 ,       0,       0,       0,       0
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