Improve altitude chart

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/request-a-feature/improve-altitude-chart/
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First, let me say I’m SO impressed that ABRP models regeneration as well as increased kW requirements for uphill segments.

I’d really like to be better able to interpret the altitudes on the chart though.

Take a look at these two screen shots. It’s not clear what the numbers of feet of altitude are to be associated with. I’m finding it ambiguous.