The heating value depends on the source of gas that is used and the process that is used to liquefy the gas. The range of heating value can span +/- 10 to 15 percent. A typical value of the higher heating value of LNG is approximately 50 MJ/kg or 21,500 Btu/lb.
The average salary for bookkeeper jobs is $37,000. Average bookkeeper salaries can vary greatly due to company, location, industry, experience and benefits. This salary was calculated using the average salary for all jobs with the term bookkeeper anywhere in the job listing.
What is a reasonable amount to pay a good bookkeeper? $100/hour is $200,000 a year, more than most executive incomes. I find that rather disturbing as it doesn't strike me as a skill that requires specialized education like a CPA, Lawyer, or engineer.