dar = drop anything rate
rdr = rare drop rate
https://wiki.pioneer2.net/w/Drop_charts#Drop_anything_rate
The other cells (and the one on the main page) give you the percentages for dar/rdr separately when you hover over the calculated total:
css is the language for coding website...
I don't do much RT but I always remember people saying not to use Jellen on Gryphon. Why is this? I often fight Gryphon in OPM and Jellen without any issues, but maybe the difference in mode matters.