Access data for timeseries and climatology plots
pr_get_Indices(Survey = "CPR", Type = "P", ...)
dataframe to use in pr_plot functions
df <- pr_get_Indices("NRS", "P")
df <- pr_get_Indices("NRS", "Z")
df <- pr_get_Indices("NRS", "W")
df <- pr_get_Indices("CPR", "P", near_dist_km = 250)
df <- pr_get_Indices("CPR", "Z")