Mr Henderson also questioned whether the data would have been released at all if lower levels of methane were detected.
However, Professor Lee said the release of the research was standard practice.
“Science is an evolutionary process, one comes up with data, one has then to look at the data and then progress from that point,” he said.
“This is nothing new, we would’ve released the data whichever way it had’ve gone.”
Professor Lee also said Mr Henderson sent an email to the university last week which was not critical of the research.
“He did indeed write to us and said it looked like we had some interesting data, a very interesting tool, he’d love to see us use that to develop more background data and it might be useful in exploration,” he said.
“It doesn’t sound like Metgasco has problems with the validity of the research.”
Prof Lee acknowledged an issue with the study was the lack of baseline data.
“What we didn’t say and cannot say is why those gas levels are high,” he said.
“We’re unable to say because there is no baseline data.
“It’s like going on a diet where you don’t have a before picture… therefore you’re unable to tell if there’s been an improvement or not.”