11 CORRECTION FOR REFRACTION AND EARTH CURVATURE
11-67
大氣改正值參考圖
The atmospheric correction value is obtained easily with the atmospheric correction chart.
Find the measured temperature in horizontal, and pressure in vertical, on the chart.
Read the value from the diagonal line, which represents the required atmospheric
correction value.
Example:
The measured temperature is +26C
The measured pressure is 760mmHg
Therefore,
The correction value is +10ppm
Temprerature(°C)
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