Grouping zones by level range?

[Stroboo]

Best times to find grps are prime time est
HHK goblins still has grps in the evenings est lots of nights i think, tanks are at a premium usually (20-30)
30-40 you can find people around PAW and sometimes inside, i was also able to find grps at OT ramp consistently recently as well.
40-50 CoM, was 20people there the other night but can be empty during the day
50+ KC has 20+ nightly