Well....

I think the first image was developed 2 degrees C too warm
The second one was about right....
The last one I think is .....

Heck, you can't tell if the temp was wrong by just looking at prints! I think they all look wonderful. The high contrast of the first image really works well where as it didn't do so well with the last. But that's just my preference. You could very well say, "but I meant to do that" and you'll be fine... hehe.

Seriously, if the temp was warmer, you shorten the dev time. If the temp was cooler, you lengthen, to get the same result. It's combination of both that determines the level of development which affects contrast. (and agitation, too)

All that is kind of lost if you are scanning though.

I think you did very well here.