datastream, year, month, tod,n, min, max, mean, std
twpcmbeC1.c1,2004,08 0:30:00,31 ,       0, 0.00027, 8.72E-6,0.000049
twpcmbeC1.c1,2004,08 1:30:00,31 ,       0,       0,       0,       0
twpcmbeC1.c1,2004,08 2:30:00,31 ,       0,       0,       0,       0
twpcmbeC1.c1,2004,08 3:30:00,31 ,       0,       0,       0,       0
twpcmbeC1.c1,2004,08 4:30:00,31 ,       0,       0,       0,       0
twpcmbeC1.c1,2004,08 5:30:00,31 ,       0,0.011425,0.000677,0.002631
twpcmbeC1.c1,2004,08 6:30:00,31 ,   1.129,35.06413,20.07237,7.677979
twpcmbeC1.c1,2004,08 7:30:00,31 ,6.967056,143.2301,95.62212,32.66093
twpcmbeC1.c1,2004,08 8:30:00,31 , 18.9532, 296.172,156.5912,62.19725
twpcmbeC1.c1,2004,08 9:30:00,30 ,27.26177,404.2448, 207.595,88.93082
twpcmbeC1.c1,2004,0810:30:00,31 ,39.66061,472.7577,223.0463,104.1164
twpcmbeC1.c1,2004,0811:30:00,31 ,58.73536,  503.49,246.4335, 131.938
twpcmbeC1.c1,2004,0812:30:00,31 ,99.79653,527.5471,260.5458,120.9408
twpcmbeC1.c1,2004,0813:30:00,31 ,113.7897,503.3867,223.5884,86.66205
twpcmbeC1.c1,2004,0814:30:00,31 ,43.64231,414.2648,204.6273,87.23689
twpcmbeC1.c1,2004,0815:30:00,31 ,22.00782,328.3692,166.5757,64.78238
twpcmbeC1.c1,2004,0816:30:00,31 ,15.10036,221.7505,124.2743,43.21792
twpcmbeC1.c1,2004,0817:30:00,31 , 2.75577,93.83293,54.51452,19.22767
twpcmbeC1.c1,2004,0818:30:00,31 ,0.008354,6.666207,2.766522,1.229213
twpcmbeC1.c1,2004,0819:30:00,31 ,       0,       0,       0,       0
twpcmbeC1.c1,2004,0820:30:00,31 ,       0,       0,       0,       0
twpcmbeC1.c1,2004,0821:30:00,31 ,       0,       0,       0,       0
twpcmbeC1.c1,2004,0822:30:00,31 ,       0,       0,       0,       0
twpcmbeC1.c1,2004,0823:30:00,31 ,       0,       0,       0,       0