What is the atmospheric neutrino oscillation length scale associated to the LSND?

When reading Sterile neutrinos, hot, warm and cold dark matter, there is a discussion about framing $nu$ (neutrino) oscillation solutions into a 3$nu$ framework. And the following is stated:

"Leaving aside maximal vacuum mixing of all three neutrino species, these analyses generally require the atmospheric neutrino oscillation length scale to be the one associated with the short-base-line LSND (Liquid Scintillator Neutrino Detector) experiment (…)"

What is this length scale associated with the LSND?

I have found that the oscillation length scale is the length of the path of the neutrino and it represented by $L$ but I don’t seem to find anything in the mentioned article regarding it being the same as the one associated to the LSND.