Include surface GF in infobox

The most recent firmware of Shearwater computers shows this.

This is a measure of absolute amout of tissue loadings in an
easy to digest unit. Therefore it is useful to have.

Signed-off-by: Robert C. Helling <helling@atdotde.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/core/profile.h b/core/profile.h
index 9e714a806..b0828c48f 100644
--- a/core/profile.h
+++ b/core/profile.h
@@ -63,6 +63,7 @@ struct plot_data {
 	int bearing;
 	double ambpressure;
 	double gfline;
+	double surface_gf;
 	double density;
 	bool icd_warning;
 };