Table A-4. Exposure matrix used for estimating observed physical exposure (EXP_OBSER) on the basis of fetch distance

Maximum Fetch (km) Modified Effective Fetch (km)
< 1 1-10 10-50 50-500 > 500
< 1 very protected n/a n/a n/a n/a
< 10 protected protected n/a n/a n/a
10-50 n/a semi-protected semi-protected n/a n/a
50-500 n/a semi-exposed semi-exposed semi-exposed n/a
> 500 n/a n/a semi-exposed exposed exposed

Codes for exposures: very protected- VP
protected- P
semi-protected- SP
semi-exposed- SE
exposed- E
very exposed- VE