Mount McKinley, corrected barometer 13.644 in. 21,324 ft. Fort Gibbon, corrected barometer 29.462 " 400 " ------ 20,924 ft. Mean temperature, 41.7 deg.--approximate difference in elevation 20,924 ft. -356 ft. Latitude, 64 deg.--approximate difference in elevation 20,568 " +15 " Mean temperature, 41.7 deg.--approximate difference in elevation 20,568 " +71 " Elevation lowest, 400--approximate difference in elevation 20,568 " +20 " ------ Elevation above Fort Gibbon 20,674 ft. Elevation of Fort Gibbon 334 " ------ _Elevation above sea_ 21,008 ft. USING THE THERMOMETRIC READING OF 7 deg. AT MOUNT MCKINLEY AND THE U. S. WEATHER BUREAU READING AT VALDEZ FOR SAME DATE Mount McKinley, barometric reading 13.617 in. Barometer reduced to standard temperature +.027 " Temp. 7 deg. ------ 13.644 in. Valdez, barometric reading 29.76 in. Barometer reduced to standard temperature .068 " ------ 29.692 in. Temp. 54 deg. Mount McKinley, corrected barometric reading 13.644 in. 21,324 ft. Valdez, corrected barometric reading 29.692 " 190 " ------ 21,134 ft. Mean temperature, 30.5 deg.--approximate difference in elevation 21,134 ft. -840 " Latitude, 62 deg.--approximate difference in elevation 20,295 " +18 " Mean temperature, 30.5 deg.--approximate difference in elevation 20,295 ft. +42 ft. Elevation lowest, 190--approximate difference in elevation 20,295 " +20 " ------ Elevation above Valdez 20,374 ft. Elevation of Valdez 10 " ------ _Elevation above sea_ 20,384 ft. ALTITUDES OF CAMPING STATIONS FIRST GLACIER CAMP