35	avg_yield1
42	avg_yield2
-99	avg_yield3
-99	avg_yield4

45	high_yield1
56	high_yield2 
-99	high_yield3
-99	high_yield4 

20	low_yield1
19	low_yield2
-99	low_yield3
-99	low_yield4

3417	avg_residue1
3000	avg_residue2
-99	avg_residue3
-99	avg_residue4

4100	high_residue1
3685	high_residue2
-99	high_residue3
-99	high_residue4
    
2300	low_residue1
1920	low_residue2
-99	low_residue3
-99	low_residue4

2.5	users estimate of observed_wind_erosion
3.4	past WEQ_erosion_estimate