QC: Check for only one decimal place.

1 files changed, 3 insertions, 3 deletions

diff --git a/quality_control/average.py b/quality_control/average.py
index ad732d0..95b6c4a 100644
--- a/quality_control/average.py
+++ b/quality_control/average.py
@@ -9,8 +9,8 @@ def invalid_value(line_number: int, column_number: int, val: str) -> Union[
     """Return an `InvalidValue` object if `val` is not a valid "averages"
     value."""
     return cell_error(
-        r"^([0-9]+\.[0-9]{3}|[0-9]+\.?0*)$", val, line=line_number,
+        r"^[0-9]+\.[0-9]{1,}$", val, line=line_number,
         column=column_number, value=val, message=(
             f"Invalid value '{val}'. "
-            "Expected string representing a number with exactly three "
-            "decimal places."))
+            "Expected string representing a number with at least one decimal "
+            "place."))