pub const THICKNESS_SLACK_M: f64 = 30.0;Expand description
The meters a row’s height may miss its layer’s thickness by, beyond the share and the pressures’ rounding: 30 m. A coded message’s heights from 500 hPa up are rounded to 10 m; a height 30 m off misplaces its level by as much as a pressure error of 0.33% to 0.55% (the air’s scale height, the climb over which pressure falls by a factor of e, is 5.5 to 9 km), so the check is for gross errors, not for these.