datastream, year, month, tod,n, min, max, mean, std
twpcmbeC3.c1,2002,07 0:00:00,31 ,       0,0.000167,5.376E-6, 0.00003
twpcmbeC3.c1,2002,07 1:00:00,31 ,       0,0.000667,0.000022, 0.00012
twpcmbeC3.c1,2002,07 2:00:00,31 ,       0,0.000333,0.000016,0.000067
twpcmbeC3.c1,2002,07 3:00:00,31 ,       0,       0,       0,       0
twpcmbeC3.c1,2002,07 4:00:00,31 ,       0,  0.0005,0.000022,0.000094
twpcmbeC3.c1,2002,07 5:00:00,31 ,       0,       0,       0,       0
twpcmbeC3.c1,2002,07 6:00:00,31 ,       0,       0,       0,       0
twpcmbeC3.c1,2002,07 7:00:00,31 ,4.268167,7.793647,5.266494,0.726383
twpcmbeC3.c1,2002,07 8:00:00,31 ,  36.205,78.03394,50.28077,9.249142
twpcmbeC3.c1,2002,07 9:00:00,30 ,52.90867,166.4437,85.02848,22.89714
twpcmbeC3.c1,2002,0710:00:00,31 ,63.91266,202.9183,105.9577,37.48426
twpcmbeC3.c1,2002,0711:00:00,31 ,71.31033,263.5403,115.9214,46.95472
twpcmbeC3.c1,2002,0712:00:00,31 ,74.62817,296.2819,130.7403,55.78399
twpcmbeC3.c1,2002,0713:00:00,31 ,  76.641,299.5554,139.5301,59.46076
twpcmbeC3.c1,2002,0714:00:00,31 ,82.09068,311.9523,143.9323,53.92873
twpcmbeC3.c1,2002,0715:00:00,31 ,86.91001,248.0233,129.7386,40.73742
twpcmbeC3.c1,2002,0716:00:00,31 ,78.85916,187.4913,106.3529,30.41446
twpcmbeC3.c1,2002,0717:00:00,31 , 63.9795,141.0108, 77.9713,17.48566
twpcmbeC3.c1,2002,0718:00:00,31 ,32.27666,46.88583,37.18643,3.450863
twpcmbeC3.c1,2002,0719:00:00,30 ,0.765436,    6.25,1.586207,1.012083
twpcmbeC3.c1,2002,0720:00:00,31 ,       0,       0,       0,       0
twpcmbeC3.c1,2002,0721:00:00,31 ,       0,0.000678,0.000022,0.000122
twpcmbeC3.c1,2002,0722:00:00,31 ,       0,       0,       0,       0
twpcmbeC3.c1,2002,0723:00:00,31 ,       0,       0,       0,       0