Seeing
 UT Date  at 200  Weather description
22-Jul-02  1.4  Clear.  RH = 42%.
12-Sep-02  1.4  Clear.  RH = 39%.
13-Sep-06  1.3  Clear to scattered clouds.  Winds to 12 mph.
20-Sep-06  1.2  Mostly clear.  Winds to 18 mph.