UKPassats

What spec is the 5w40? https://www.eurocarparts.com/p/castrol-edge-fst-engine-oil-5w-40-4ltr-521771981 Same as this, bear in mind all the numbers confuse me don't really get it. More am I alright using it or if it needs replacing can it wait till say next weekend with me using it driving 10miles a ...

New to group. Have a 2.0tdi bluemotion, 140 model.
Just done a service and realised I picked up (an then put in) 5w40 oil instead of 5w30. Will this make much of a difference or will it be good to run about for a while?
Ideally don't want to be crawling under car again as it's awkward to do where I am