How much does a skilltrainer improve a skill that is already above 0?

[Hemmingjay]

I'm looking at a skilltrainer for shooting and wondering how much it will speed up improvement for my designated marksman. Thank you for your help!

[Hoki]

a skilltrainer simply provides xp. given its just xp the amount will be affected by passions meaning you get more with passions in those skills.

[gimmethegepgun]

It gives 50,000 XP in the skill, modified by passion (35% if no passion, 100% if passion, 150% if burning passion, meaning 17,500, 50,000, or 75,000). Personality traits that affect skill learning rates have no impact on this.

You can see how much is needed to get to different ranks here[rimworldwiki.com]

[Hemmingjay]

Thank you both!