diff --git a/pytec/pytec/gui/view/param_tree.json b/pytec/pytec/gui/view/param_tree.json
index 34f0114..4aa996d 100644
--- a/pytec/pytec/gui/view/param_tree.json
+++ b/pytec/pytec/gui/view/param_tree.json
@@ -215,7 +215,7 @@
             },
             {
                "name": "rate",
-               "title": "Postfilter Rate",
+               "title": "50/60 Hz filter rejection",
                "type": "list",
                "value": 16.67,
                "param": [
@@ -225,10 +225,10 @@
                ],
                "limits": {
                   "Off": null,
-                  "16.67 Hz": 16.67,
-                  "20 Hz": 20.0,
-                  "21.25 Hz": 21.25,
-                  "27 Hz": 27.0
+                  "47 dB @ 10.41 Hz": 27.0,
+                  "62 dB @ 10 Hz": 21.25,
+                  "86 dB @ 9.1 Hz": 20.0,
+                  "92 dB @ 8.4 Hz": 16.67
                },
                "tip": "Trade off effective sampling rate and rejection of (50±1) Hz and (60±1) Hz",
                "lock": false