Karl, if you want to see my SpecLab settings, I could post them here.
Something else that might be worth trying - if you download the Colorgramme software from the rmob website, you could use the "conditional actions" in SpecLab to detect "hits" and load the data into Colorgramme. Andy Smith has a good tutorial for programming "conditional actions" on his website
http://www.tvcomm.co.uk/radio/how-to.html#Speclab
Or if you like, I could send you the "conditional actions" program I worked up (simpler than Andy's example). You would probably have to adjust some of the numbers for frequency, signal strength, etc.
Loading the data into Colorgramme would enable you to see daily and monthly summaries. Genuine meteor "hits" should be at a maximum around sunrise, and at a minimum around sunset. If a meteor shower occurs, that should show up on the monthly summary.