Creature Harvesting 9 (Source)

I spend a little time on the Ranger formula and managed to correct it so it fits with your numbers. I found a droid ratio of 3.55, not 2.
I didn't do any tests on creatures. I based these formula on the rangers' one and your tests. If anyone wants to help, make make more tests (a master ranger would be cool) to see if the ratio is still good for an high level.
 
Units Harvested = 1 + (skill + (droid / ratio) + verglash) / 100) * CL * base_amount * (1 + density/100)
 
 
skill : Scout or Ranger Creature Harvesting points

droid : Droid Creature Harvesting Bonus

ratio : Here is where i find 3.55

verglash : power of the verglash drunk

CL : Creature Level

base_amount : The creature base amounts of Meat, Hide and Bone

density : The rangers say the creature ressources have a density exactly like mineral, chemical, etc. It's a percent, that changes in the area. Same creatures in the exact same place will give the same amount of ressources. But if they move, the density changes and amounts will change. Strange isn't it ?

 

Now here is my formula that gives the percent of increase a droid gives compare to someone without droid.

droid / ( ratio * ( 1+ skill/100 )
 
With this formula here are the percent of increase droids can give to scouts and rangers, cause this is what interests us DE :
 
Skill                                 20       60       90       100      105     110     115     120
Novice Scout (+15)                    4.9     14.7    22.0     24.5     25.7    26.9    28.2    29.4
Hunting 1 (+20)                       4.6     14.0    21.1     23.5     24.6    25.8    27.0    28.1
Hunting 2 (+30)                       4.3     13.0    19.5     21.7     22.7    23.8    24.9    26.0
Hunting 3 (+35)                       4.2     12.5    18.8     20.9     21.9    22.9    24.0    25.0
Hunting 4 (+45)                       3.9     11.7    17.5     19.4     20.4    21.4    22.3    23.3
Master Scout (+50)                    3.7     11.2    16.9     18.8    19.7     20.7    21.6    22.5
Novice Ranger (+55)                   3.6      10.9    16.4     18.2    19.1     20.0    20.9    21.8
Field 1 (+60)                         3.5      10.6    15.8     17.6     18.5    19.4    20.2    21.1
Field 2 (+70)                        3.3       9.9     14.9     16.6     17.4    18.2    19.1    19.9
Field 3 (+80)                        3.1       9.4     14.0     14.6     16.4    17.2    18.0    18.8
Field 4 (+90)                        3.0       8.9     13.3     14.8     15.6    16.3    17.0    17.8
Master Ranger (+100)                 2.8       8.4     12.7     14.1     14.8    15.4    16.2    16.9
 
 
I've heard rangers saying : a +108 droid harvests only 5-10% more then themselves. So there are 4 possibilities :
- The formula is wrong
- My ratio is wrong
- These rangers didn't know about the "density" thing
- Rangers hate machines and maths