OptionalmaxCeiling on bucket width, m — never coarser than the overview (default 100).
OptionalminFloor on bucket width, m — don't out-resolve the raw sampling (default 5).
OptionaltargetTarget number of buckets across the window (default 160). The bucket width is the window span / this, clamped to [minBucketMeters, maxBucketMeters].
Options for windowChannels.