Counter-intuitive? I would expect the second row, which is the first to encounter wake turbulence, to have the biggest drop and then for drops to increase slowly WRT the first row as one moves back in the array. The first row is the only one not to encounter wakes. What is considered the maximum acceptable drop allowed for the last row of an array? Any rule of thumb?

As the Dutch said while fighting the Spanish: "It is not necessary to have hope in order to persevere."