Health bands
Some metrics carry a verdict alongside the number — a quiet judgement about whether the reading is where it should be. The bands exist so a page full of figures still has a shape you can take in at a glance, without knowing the healthy range for every metric on it.
A band is a prompt to look, never an instruction. The ranges are general, and a business with an unusual cost structure will sit outside them permanently and correctly.
Healthy
This metric sits in the range we consider healthy for this report.
Watch
This metric has drifted outside the healthy range — worth watching, not yet urgent.
Needs attention
This metric has moved far enough from healthy that it's worth investigating now.