anchor.diff:      data = [
         _ChartData(
           'All',
  -        (stats.hourlyBlocked + stats.hourlyAllowed) / 30.0,
  +        max((stats.rateTotal) / 1.0, 20),
           const Color(0xff808080),
           ui.Gradient.sweep(
             const Offset(0.5, 0.5),
  
positive.code: import 'dart:async';
  import 'dart:typed_data';
  import 'dart:ui' as ui;
  
  
negative.code:       ),
        _ChartData(
          'Blocked',
          max(stats.rateBlocked / 1.0, 20),
          const Color(0xffff3b30),
          ui.Gradient.sweep(
            const Offset(0.5, 0.5),
  