No, as I said - on surface all floors from level 0 to +7 (doesn't affect respawn on any floors underground)
So when you stand on surface (ground floor 0) you block respawn on floor 0, +1, +2 ... to + 7 (not on floors -1 or -2)
When you stand on floor -3 you block respawn on floors -5, -4, -3...