All the asteroids were 100% I fire the prospector and then note the % drop after 1 frag has dropped, I think the asteroid ore % are the same whatever the prospector just that the better grades "find" more of the ore so a 1A will almost double the yield of a 1D.
Essentially a frag could be 40% osmium (5 frags = 2 tons refined) but a 1A will allow 28 - 42 frags a 1D 16 - 24 so if the ship can spare the power fit a 1A.
1A prospector range 2.38 - 3.57 %/frag or 42 - 28 fragments
1B prospector range 2.73 - 4.17 %/frag or 36 - 24 fragments
1C prospector range 3.70 - 5.00 %/frag or 30 - 20 fragments
1D prospector range 4.17 - 6.25 %/frag or 24 - 16 fragments
1E prospector range ???? - ???? %/frag or ?? - ?? fragments (pending)
Essentially a frag could be 40% osmium (5 frags = 2 tons refined) but a 1A will allow 28 - 42 frags a 1D 16 - 24 so if the ship can spare the power fit a 1A.
1A prospector range 2.38 - 3.57 %/frag or 42 - 28 fragments
1B prospector range 2.73 - 4.17 %/frag or 36 - 24 fragments
1C prospector range 3.70 - 5.00 %/frag or 30 - 20 fragments
1D prospector range 4.17 - 6.25 %/frag or 24 - 16 fragments
1E prospector range ???? - ???? %/frag or ?? - ?? fragments (pending)