UT_date    UT           ZRMS  ZD          AM          K_Seeing
02/18/2006 04:47:50     0.049 0.018186	  1.00016534  0.778485715
02/18/2006 04:53:02     0.057 0.007492	  1.00002813  0.92818296
02/18/2006 05:31:57     0.041 0.768167	  1.39046192  0.520912468
02/18/2006 06:58:33     0.042 0.021000	  1.00022054  0.652347326
02/18/2006 08:21:08     0.035 0.608308	  1.21859658  0.472295642