Response variables and covariate processes.

Time series plot of maximum depth (MD), duration of dive (DT), and post-dive duration (PD) from dive number 3890 to 3950 and the covariate processes counting the time since last deep dive (τt), number of deep dives in a row (dt), and the hour at initiation of dive (ht). The symbols indicate the decoded hidden states from a model fitted to a dependent log-normal distribution (Model 1).