UT_date    UT           ZRMS  ZD          AM          K_Seeing
04/18/2006 05:00:03     0.036 0.038843	  1.00075483  0.548380733
04/18/2006 07:03:20     0.027 0.020705	  1.00021434  0.40259549
04/18/2006 08:51:37     0.026 0.010331	  1.00005341  0.387329668
04/18/2006 09:20:44     0.027 0.016661	  1.00013888  0.402613699
04/18/2006 10:10:49     0.025 0.020662	  1.0002135  0.372211456