1 files changed, 2 insertions, 0 deletions
diff --git a/fhunit.pas b/fhunit.pas
index 7aba5dc..555999c 100644
--- a/fhunit.pas
+++ b/fhunit.pas
@@ -219,6 +219,8 @@ begin
         exit;
       if (t='--') and (mG=mgGlobalstrahlung) then
         _mW[mG]:=0
+      else if t='--' then
+        _mW[mG]:=nan
       else
         _mW[mG]:=strtofloat(t);
     end;