Code:
Teams Mat Won Lost Tied Draw Aban Pts
Hampshire 15 3 3 0 9 0 158
Yorkshire 15 2 2 0 11 0 156
Lancashire 15 3 2 0 10 0 154
Sussex 15 2 5 0 8 0 139
Lancashire v Warwickshire at Manchester
Sep 23-26 (10:30 local, 09:30 GMT)
Notts v Sussex at Nottingham
Sep 23-26 (10:30 local, 09:30 GMT)
Yorkshire v Hampshire at Leeds
Sep 23-26 (10:30 local, 09:30 GMT)
So just to summarise:
If Hampshire get 3 points they're safe.
If Yorkshire get 6 points they're safe (tie-breakers would work against them).
If Lancashire get 7 points they're safe.
Sussex need to win and get as many bonus points as possible. For each point out of the maximum of 22 they drop that's one less the other sides need to reach survival.