If I remember correctly, then I think Udinese have never finished in the top 4 in the last 8 seasons.
You're right, I can see his history in the standings from season to season.
Udinese are just a team that has almost always been in 12-14 position at the end of the season especially in the last 5 seasons, but this season their performance has improved much more. So I hope you don't expect too much improvement for Udinese this season even though in the last 7 match they won 5 match in a row.
Udinese haven't been in the top 10 so far because they are a mid-table team in Serie A. I wouldn't be too surprised if in the next 1 to 2 months their form drops drastically than they are now. But it never hurts to appreciate them at the moment.