Investor Presentaiton

Mass balance calculations in the ocean interior Σ R₁ = Σ I₁ R₁+R2=11+12+13+14+5 (1) (2) (11.7-14.8 PBq; Aoyama et al., 2016b) R₁: Atmospheric deposition. R2: Direct discharge (3.5±0.7 PBq; Tsumune et al., 2013) R₁+R2: 15.2 to 18.3 PBq 15.3 ± 2.6 PBq (Inomata et al., 2016) by Ol 13 = (R₁+R₂) −11 −12 (3) 11 Surface water inventory 7.9±1.4 PBq 12 STMW 13 CMW 14 Biota 4.2±1.1 PBq (Kaeriyama et al., 2016) 2.5 ± 0.9 PBq (Inomata et al., 2018) negligible 200 GBq (Aoyama et al., 2019) 15 Sediment negligible 130 +- 60 TBq (Kusakabe et al., 2014)

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