35 avg_yield1 65 avg_yield2 1285 avg_yield3 55 high_yield1 80 high_yield2 1600 high_yield3 20 low_yield1 42 low_yield2 900 low_yield3 3096 avg_residue1 4810 avg_residue2 3225 avg_residue3 4100 high_residue1 5290 high_residue2 3872 high_residue3 2130 low_residue1 4218 low_residue2 2470 low_residue3 6 users estimate of observed_wind_erosion 8 past WEQ_erosion_estimate