--- numberdisplayform.cc.orig	2018-03-06 19:01:59.889492754 -0500
+++ numberdisplayform.cc	2018-03-07 13:20:30.461132659 -0500
@@ -240,7 +240,7 @@
 
     for(int i = 0; i < d_nplots; i++) {
       float f = d_factor[i]*samples[i];
-      d_text_box[i]->setText(QString("%1 %2").arg(f, 4, ' ').\
+      d_text_box[i]->setText(QString("%1 %2").arg(f, 4, 'f', 2, ' ').\
                              arg(QString(d_unit[i].c_str())));
       d_indicator[i]->setValue(f);
       d_min[i] = std::min(d_min[i], f);