60 avg_yield1 60 avg_yield2 60 avg_yield3 1 avg_yield4 1 avg_yield5 1 avg_yield6 1 avg_yield7 1 avg_yield8 1 avg_yield9 -99 high_yield1 -99 high_yield2 -99 high_yield3 -99 high_yield4 -99 high_yield5 -99 high_yield6 -99 high_yield7 -99 high_yield8 -99 high_yield9 -99 low_yield1 -99 low_yield2 -99 low_yield3 -99 low_yield4 -99 low_yield5 -99 low_yield6 -99 low_yield7 -99 low_yield8 -99 low_yield9 1500 avg_residue1 1500 avg_residue2 1500 avg_residue3 -99 avg_residue4 -99 avg_residue5 -99 avg_residue6 -99 avg_residue7 -99 avg_residue8 -99 avg_residue9 1 users estimate of observed_wind_erosion 1.4 past WEQ_erosion_estimate