From The Document Foundation Wiki
- The thresholds are displayed in the table in M40, M41, M42.
- We use the Formula type to enter the references.
- The values used will be respectively 10, 60 and 80. The gradient begins with blue for values equal to 10 (values lesser than 10 will also be colored in blue, the "minimum" color), and ends at 80 in red (values greater than 80 will be colored in red, the maximum value).