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Figure 1. Relation of exposure and annoyance, highly annoyed (% HA) 1 FICON (1992) 2 Gezondheidsraad (1997) Ldn = 24h equivalent level (15 hours by day and 9 hours with an additional supplement of 10 dB at night)

Figure 1. Relation of exposure and annoyance, highly annoyed (% HA)
1 FICON (1992)
2 Gezondheidsraad (1997)
Ldn = 24h equivalent level (15 hours by day and 9 hours with an additional supplement of 10 dB at
night)