diff --git a/tui/src/tui_perf.rs b/tui/src/tui_perf.rs
index e98c1a6..21fc338 100644
--- a/tui/src/tui_perf.rs
+++ b/tui/src/tui_perf.rs
@@ -4,11 +4,11 @@ use crate::*;
 #[derive(Debug)]
 pub struct PerfModel {
     pub enabled: bool,
-    clock:  quanta::Clock,
+    pub clock:  quanta::Clock,
     // In nanoseconds. Time used by last iteration.
-    used:   AtomicF64,
+    pub used:   AtomicF64,
     // In microseconds. Max prescribed time for iteration (frame, chunk...). 
-    window: AtomicF64,
+    pub window: AtomicF64,
 }
 
 pub trait HasPerf {