The geodetic longitude of the observer ObsLon
The value is stored internally in radians, but is converted to and from a degrees string for
access. Some example input formats are: "
155:19:23.2"
, "
155 19 23.2"
, "
155:19.387"
, "
155.32311"
, "
E155.32311"
, "
-204.67689"
, "
W204.67689"
. As indicated, the sign of
the longitude can optionally be indicated using characters "
E"
and "
W"
in place of the
usual "
"
and "
-"
. When converting the stored value to a string, the format "
[s]ddd:mm:ss.ss"
is used, when "
[s]"
is "
E"
or "
W"
and the numerical value is chosen to be less than
180 degrees.