Sound level means the A-weighted Sound Pressure Level;
Ground Level means the level of the referred point of exposed surface of the ground as indicated in the drawing.
Sound level meter means an instrument which includes a microphone, amplifier, RMS detector, integrator or time averager, output meter, and weighting networks used to measure sound pressure levels.
Maximum Index Level means, in respect of a series of bear CBBCs, the highest Spot Level of the Index during the MCE Valuation Period;
Minimum Level (ML) means the concentration at which the entire analytical system must give a recognizable signal and an acceptable calibration point. The ML is the concentration in a sample that is equivalent to the concentration of the lowest calibration standard analyzed by a specific analytical procedure, assuming that all the method-specified sample weights, volumes and processing steps have been followed.