Figure 5

Time pattern of external effective dose rate per unit 137Cs deposition ((mSv y−1)/(MBq m−2 137Cs) for indoor occupancy in residential wooden houses for the three different soil migration settings and for a 134Cs/137Cs ratio of 1, for various time delays to cleanup, tcleanup with 5 cm topsoil removal. The cases with tardy scraping effects are highlighted with red circles.