id	keyword
giw-72	ch4
giw-72	gas
giw-72	water
giw-72	lake
giw-72	powell
giw-72	utah
giw-72	methane
giw-72	lake powell
giw-72	day
giw-72	simpson
giw-72	samples
giw-72	production
giw-72	level
giw-72	volcanoes
giw-72	co2
giw-72	emissions
giw-72	sampling
giw-72	geology
giw-72	average
giw-72	delta
giw-72	volume
giw-72	sherrod
giw-72	mud