Regen rates from:
an old monkly business article
Level 1:
Troll/Iksar: 4pt sitting, 2pt standing
Other: 2pt sitting, 1pt standing
level 20:
Troll/Iksar: 6pt sitting, 2pt standing
Other: 3pt sitting, 1pt standing
level 50:
Troll/Iksar: 8pt sitting, 2pt standing
Other: 4pt sitting, 1pt standing
level 51:
Troll/Iksar: 12pt sitting, 6pt standing
Other: 5pt sitting, 2pt standing
level 56:
Troll/Iksar: 16pt sitting, 10pt standing
Other: 6pt sitting, 3pt standing
level 60:
Troll/Iksar: 18pt sitting, 12pt standing
Other: 7pt sitting, 4pt standing