diff -r 40d4d2bb5f11 -r ebf4996ab396 src/ChartCarbonate.cpp
--- a/src/ChartCarbonate.cpp	Mon Nov 07 15:02:16 2022 +0100
+++ b/src/ChartCarbonate.cpp	Fri Nov 11 15:04:23 2022 +0100
@@ -60,7 +60,7 @@
     temperature->setColor(QColorConstants::Svg::red);
     pressure->setName(tr("Pressure bar"));
     QPen pen(QColorConstants::Svg::navy);
-    pen.setWidth(3);
+    pen.setWidth(2);
     pressure->setPen(pen);
 
     chart = new QChart();