Revision as of 20:39, 14 April 2021 (view source) rosettacode>Gerard Schildberger m (→‎{{header\|REXX}}: added a REXX stub.) ← Older edit		Revision as of 20:39, 14 April 2021 (view source) rosettacode>Gerard Schildberger m (added whitespace.) Newer edit →
Line 12: Show the air mass for zenith angles 0 to 90 in steps of 5 degrees for an observer at sea level. Do the same for the SOFIA infrared telescope, which has a cruising altitude of 13,700 m. <br><br> =={{header\|FreeBASIC}}==

Air mass (view source)