* Different from total number of strikes in table 1 as net time of exposure is less than total hammering time. Sound pressure metrics measured at 45 m during pile-driving of the four monopiles and for
SSELss was identical to SLrms. The average levels of the OCTA-KONG and ambientnoise are provided. Numbers in parentheses indicate the range. Sensation level was derived by dividing the vibration sound