Rolled SPX Apr 13 6725.0 Puts to Apr 14 6725.0 Puts @ 7.00 credit (13.80 total now)
Rolled SPX Apr 13 6750.0 Puts to Apr 14 6775.0 Puts @ 9.25 credit (18.75 total now)
Rolled SPX Apr 13 6775.0 Puts to Apr 14 6800.0 Puts @ 14.00 credit (27.60 total now)

Ladder:

Rolled SPX Apr 13 6700.0 Put to Apr 20 6700.0 Put @ 30.00 credit (49.50 total now)