Hi Xen, and welcome!
It typically takes a month to vet your node on the satellites. So your first month you would have seen about 5% of the traffic you would normally see. Your node has been vetted on 3/4 satellites, which happens once you reach 100 successful audits. The 118 satellite is a testing sat which has not been used much in January, hence the lower amount of audits. You have no failed audits, which is the most important thing.
The alpha value is a function of the successful audits. I can’t remember off the top of my head how this is calculated, but the ideal value is 20.
Edit: This post gives a link to a very technical explanation of alpha and beta scores