message: fixed VolumeIsoValue.calcRelative
diff: @@ -55,7 +55,7 @@ namespace VolumeIsoValue {
  }
  export function calcRelative(stats: VolumeData['dataStats'], absoluteValue: number): number {
  - return (stats.mean - absoluteValue) / stats.sigma
  + return (absoluteValue - stats.mean) / stats.sigma
  }
  export function toAbsolute(value: VolumeIsoValue): Absolute {
  