altosui: Adjust graph voltage tool-tip value format

Voltages are always small, so use more of the space for the
fractional value.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/altosui/AltosGraph.java b/altosui/AltosGraph.java
index 9383824a..5bd756ec 100644
--- a/altosui/AltosGraph.java
+++ b/altosui/AltosGraph.java
@@ -50,7 +50,7 @@ class AltosVoltage extends AltosUnits {
 	}
 
 	public int show_fraction(int width) {
-		return width / 9;
+		return width / 2;
 	}
 }