Fig. 8
Comparison of weighted mean and Viterbi methods for estimating the most probable track (daily point estimates) of a tagged Pacific cod. A Residence distribution (surface color-coded by quantile probability) for tag 178690 with weighted mean (pink) and Viterbi (blue) pathways (land indicated by gray areas). B Maximum daily depth observed for the tagged fish (black) compared to depth at weighted mean (pink) and Viterbi (blue) locations. Root mean square error (RMSE, m) between observed and estimated depths for each method shown in the legend, is higher for locations estimated using the weighted mean method, because the weighted mean of the probability surface falls between two high-probability areas in deep water regions, whereas the Viterbi method is constrained to high-probability grid cells in shallower waters that more closely match the observed depths recorded by the fish