prec =   2.820  +/-  .005
      olr = 236.770  +/-  .05
   abs_sw = 247.150  +/-  .08
     evap =   2.805  +/-  .005
 avg temp = 3.73047E+00  agree to 5 decimals
 avg salt = 3.47201E+01  agree to 5 decimals