DECIBEL ADDITION Input values to be added

This program will add up to 6 decibel values

Individual boxes may be left vacant and will be ignored.

Negative values and values over 200 dB will not be processed.

Values are given to 1 decimal place.

For further information:
Value 1   dB  
Value 2   dB  
Value 3   dB  
Value 4   dB  
Value 5   dB  
Value 6   dB  
  Total =   dB