Honeybee glare index

Someone can tell me where I find the info about the value that the honeybee compares the glare source? I saw on a website that was 2000cm/m², but I need exacts values to my project…I tried to see the honeybee source-code to find a variable, but there is so many archives to see the details…If someone know how to find faster, can tell me the name of the archive?
thats the link that I was searching before https://github.com/ladybug-ools/honeybee/tree/master/honeybee
There is another way to find this information?