diff -r cbd7644d99ca -r c6f957fa7442 src/Utils.cpp
--- a/src/Utils.cpp	Fri Jul 07 20:17:21 2023 +0200
+++ b/src/Utils.cpp	Sat Aug 19 16:58:03 2023 +0200
@@ -877,3 +877,14 @@
     return P;
 }
 
+
+double Utils::HydroCorrection(double mg, double tr, double tc)
+{
+    double trf = tr * 1.8 + 32;
+    double tcf = tc * 1.8 + 32;
+
+    return mg * ((1.00130346 - 1.34722124E-4 * trf + 2.04052596E-6 * trf * trf - 2.32820948E-9 * trf * trf * trf) /
+	         (1.00130346 - 1.34722124E-4 * tcf + 2.04052596E-6 * tcf * tcf - 2.32820948E-9 * tcf * tcf * tcf));
+}
+
+