map from natural scene template ID to stimulus condition ID for brain observatory datasets?

[jkbhagatio]

Hi, sorry if I've missed this in the docs somewhere, but spent a decent amount of time searching, and I'm confused by the following:

The docs state that there are 118 natural images presented in the brain observatory recording sessions.

cache.get_natural_scene_template() takes 118 values between 0-117, and this works for me.

However, when I filter stimulus presentations to "natural_scenes" in a given session, e.g.

session = cache.get_session_data(session_id)
stim_data = session.stimulus_presentations
stim_data[stim_data["stimulus_name"] == "natural_scenes"]["stimulus_condition_id"].unique()

I get an array with 119 values between 4908-5026.

So I'm wondering why this is, and if there is a map between these ints and the 0-117 accepted by get_natural_scene_template() ?