append SMRU tables so each event has SSM-derived lon, lat, x, y, x.se, y.se.
smru_append_ssm(smru, fit, what = "p", meta, cut = FALSE, dropIDs = NULL)
SMRU table file - output of pull_smru_tables
final foieGras
fit object
choose which locations to use for annotating SMRU tables (default = "predicted")
metadata used to truncate start of diag data for each individual
drop predicted locations if keep = FALSE, ie. locations in a large data gap
SMRU refs to be dropped