Table for LF and LFC results give dB values with too many digits

[Picaut]

Describe the bug
The table for LF and LFC results give dB values with too many digits

To Reproduce
Generate a calculation with SPPS for example, with a punctual sound source and punctual source receiver
Calculate Advanced acoustics parameters
Check the results in the table

Expected behavior
dB should be given with only 2 numbers after comma
Additionally add unit in the head of the columnen.