0,4 – (0,2 *(Precautionary spawning biomass level – spawning biomass) / (Precautionary spawning biomass level – minimum spawning biomass level))
0,4 - (0,2 *(kudekarja biomassi ennetuslik tase - kudekarja biomass) / (kudekarja biomassi ennetuslik tase - kudekarja biomassi miinimumtase))