-71.13 ;Terrestrial east longitude of observer, degrees
42.27  ;Geodetic latitude, degrees
0.0    ;Height above sea level, meters
12.0   ;Atmospheric temperature, deg C
1010.0 ;Atmospheric pressure, millibars
1      ; 0 - TDT=UT, 1 - input=TDT, 2 - input=UT
0.0    ;Use this deltaT (sec) if nonzero, else compute it.