140 avg_yield1 40 avg_yield2 -99 avg_yield3 -99 avg_yield4 190 high_yield1 65 high_yield2 -99 high_yield3 -99 high_yield4 80 low_yield1 20 low_yield2 -99 low_yield3 -99 low_yield4 8400 avg_residue1 3000 avg_residue2 -99 avg_residue3 -99 avg_residue4 10 users estimate of observed_wind_erosion 9 past WEQ_erosion_estimate