Strutt|Propagation|Ratio of Distances, inserts the ratio of distances correction into the current row of the worksheet, to convert a measured sound level at a known distance (`d_1` to a sound level at a given distance `d_2`)
Strutt implements the formula as:
`Delta L = Clog_10(d_2/d_1)`, where
`C` is a constant and has the value 10 for line source (3 dB per doubling of distance), and has the value 20 for point source (6 dB for doubling of distance).