Verify signature - asc ?!?

I just downloaded
https://download.litecoin.org/litecoin-0.14.2/linux/litecoin-0.14.2-x86_64-linux-gnu.tar.gz
now i would like to verify the download using
https://download.litecoin.org/litecoin-0.14.2/linux/litecoin-0.14.2-linux-signatures.asc

There is no information on litecoin.org on how to do that - besides
https://download.litecoin.org/README-HOWTO-GPG-VERIFY-TEAM-MEMBERS-KEY.txt

which was found via google,not from litecoin.org itself …

There is an asc provided without any sort of information on what to do with it.
No guide, no further infos, just an .asc … i like that!

Not

Any help is appreciated.
BR
T