Here is a list of all documented variables with links to the struct/union documentation for each field:

height : peak_afl_rectangle, peak_afl_size
max : peak_afl_controller_limit, peak_afl_double_limit
min : peak_afl_controller_limit, peak_afl_double_limit
minor : Version_t
patch : Version_t
roi : peak_afl_weighted_rectangle
subminor : Version_t
weight : peak_afl_weighted_rectangle
width : peak_afl_rectangle, peak_afl_size
x : peak_afl_position, peak_afl_rectangle
y : peak_afl_position, peak_afl_rectangle