Fig. 3
From: An improved relative intensity model for earthquake forecasts in Japan
Total log-likelihood of 1-year forecasts from 1989 to 2008 versus the expected number λ0 (a) or the normalized expected number s0 (b) of earthquake occurrences at a cell of zero activity. The reference period is taken to be the previous 1 to 43 (black) or 2 to 44 (gray) years. Numerals represent the size of the rectangular reference area in degrees of latitude and longitude.