R-1: The Level Indicator dB Scale

---------+---------------------
Number
of boxes Range
---------+---------------------
Nothing -infinite to -50.0
1 -50.0 to -40.0
2 -40.0 to -36.0
3 -36.0 to -33.0
4 -33.0 to -30.0
5 -30.0 to -27.0
6 -27.0 to -24.0
7 -24.0 to -21.0
8 -21.0 to -18.0
9 -18.0 to -15.0
10 -15.0 to -12.0
11 -12.0 to - 9.0
12 - 9.0 to - 6.0
13 - 6.0 to - 3.0
14 - 3.0 to 0.0
15 0.0 to Clip