userReportedSpamRatioUpperBound property
The upper bound of the confidence interval for the user reported spam ratio.
If this field is set, then the value of userReportedSpamRatio is set to the midpoint of this interval and is thus inexact. However, the true ratio is guaranteed to be in between this upper bound and the corresponding lower bound 95% of the time. This metric only pertains to emails authenticated by DKIM.
Implementation
core.double? userReportedSpamRatioUpperBound;