Air mass curve files¶
The table of air mass coefficients is stored in the ASCII format; lines are separated
CR+LF
, LF
or CR
character. The writer can choose any separator,
it is recommended to use a separator native to the writer’s environment. The reader
must correctly handle any separator. The first line contains a list of column names
separated by a single space character. Second line is left empty.
On the following lines, the table values are stored. The values are separated by a space character, rows are separated by an end-of-line character (see above). Parsers must ignore all additional white characters between fields, at the beginning and at the end of a line. See table 1 for the description of the columns.
Table 1
Keyword |
Description |
---|---|
JD |
Geocentric Julian date of observation |
AIRMASS |
Air mass coefficient |
ALTITUDE |
Apparent altitude in degrees above horizon |