From ce93b5e7b11ba3a6efcbc64285873808e84bcc00 Mon Sep 17 00:00:00 2001
From: XANTRONIX Development <dev@xantronix.com>
Date: Thu, 13 Mar 2025 00:48:10 -0400
Subject: [PATCH] Use a constant factor
---
lib/xmet/thermo.py | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/xmet/thermo.py b/lib/xmet/thermo.py
index 94aaedd..cbed4cd 100644
--- a/lib/xmet/thermo.py
+++ b/lib/xmet/thermo.py
@@ -73,7 +73,9 @@ def pressure_height(pressure: float, surface: float=PRESSURE_MSL) -> float:
Return the approximate altitude, in meters, for a given pressure in
millibar.
"""
- return (1 - (pressure / surface) ** 0.190284) * 145366.45 * 0.3107596
+ factor = 1.0195528177497388
+
+ return (1 - (pressure / surface) ** 0.190284) * 145366.45 * 0.3048 * factor
def lapse(temp: float, delta: float, rate=LAPSE_RATE_DRY) -> float:
"""