Title Agenda Sub-Group Document Number Authors File A Range of Estimates of Natural Mortality Rate for Chub Mackerel in the North Pacific Ocean NPFC-2019-TWG CMSA02-WP01 (Rev. 2) Norio Takahashi, Yasuhiro Kamimura, Momoko Ichinokawa, Shota Nishijima, Ryuji Yukami, Chikako Watanabe, and Hiroshi Okamura JAPAN Preliminary analysis of state-space stock assessment model for the chub mackerel in the Northwest Pacific NPFC-2019-TWG CMSA02-WP02 Shota Nishijima, Ryuji Yukami, Momoko Ichinokawa, Hiroshi Okamura JAPAN