Zen's magic site list

[tinkthank]

I hope these questions are easy to answer:

- are sites labeled "underwater: Y" *ONLY* findable underwater, or *also* underwater? Are sites with neither Y or N findable everywhere?
- some sites are in red: what exactly does that mean?
- How many of these sites can be present in any one given map? If I understand correctly, these are a list of all sites which *can* be placed; if magic site frequency were set to 100%, would then all be present in every map -- thus for small maps: there would be tons pro province, for larger maps: less so -- or how are they distributed?

thank you