What do fields in the file agr_ret.txt mean

Running "./price_opt.py price 100 price_stat.txt > inc_return1.txt"
created a file 'inc_return1' with columns : product ID, candidate price, Number of trials, Total profit & average profit.

When I run "./price_opt.py inret price_stat.txt 2 > agr_ret.txt"
Can you please explain  what the columns in agr_ret.txt mean.?
