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-rw-r--r--core/units.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/core/units.h b/core/units.h
index df63dba49..535103349 100644
--- a/core/units.h
+++ b/core/units.h
@@ -13,9 +13,9 @@ extern "C" {
#define O2_IN_AIR 209 // permille
#define N2_IN_AIR 781
-#define O2_DENSITY 1429 // mg/Liter
+#define O2_DENSITY 1331 // mg/Liter
#define N2_DENSITY 1165
-#define HE_DENSITY 179
+#define HE_DENSITY 166
#define SURFACE_PRESSURE 1013 // mbar
#define SURFACE_PRESSURE_STRING "1013"
#define ZERO_C_IN_MKELVIN 273150 // mKelvin