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-rw-r--r--core/units.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/core/units.h b/core/units.h
index 7e4c2e7d2..df63dba49 100644
--- a/core/units.h
+++ b/core/units.h
@@ -14,7 +14,7 @@ extern "C" {
#define O2_IN_AIR 209 // permille
#define N2_IN_AIR 781
#define O2_DENSITY 1429 // mg/Liter
-#define N2_DENSITY 1251
+#define N2_DENSITY 1165
#define HE_DENSITY 179
#define SURFACE_PRESSURE 1013 // mbar
#define SURFACE_PRESSURE_STRING "1013"