It is not the generation nor persistence of the trails that interests me, it is that other aircraft, some leaving trails and others not, INVESTIGATE how other previously left trails have deformed.
According to the Bureau of Labor Statistics, as of 2010 writers and authors earned a median salary of $55,420 per year, or $26.64 per hour. These numbers are for freelance writers and authors of books, though, and novelist income is harder to pin down because usually, income depends on book sales and contracts.
A Writer with late-career experience which includes employees with greater than 20 years of experience can expect to earn an average total compensation of $64,000 based on 79 salaries. Pay Difference by Location