Table 1 .—Results of photo interpretation of 1 :1 600 scale photography for date of mortality 



Photo classification 



Ground classification 



Dead 1 year 



Dead 2 years 



Missed 



Total 



Dead 1 year 



31 



1 



10 



42 



Dead 2 years 



4 



14 



10 



28 



Dead more than 2 years 



1 



5 





6 



Not dead or no tree 



_7_ 



1 





8 



Total 



43 



21 



20 



84 



Table 2.— Results of photo interpretation of 1 



:2400 scale photography for date of mortality 



Photo classification 



Ground classification 



Dead 1 year 



Dead 2 years 



Missed 



Total 



Dead 1 year 



20 



2 



7 



29 



Dead 2 years 



2 



4 



12 



18 



Dead more than 2 years 





3 





3 



Not dead or no tree 



_5_ 







5 



Total 



27 



9 



19 



55 



4 



