Levels and lines: FAC. First few levels for ions II III and IV calibrated to NIST - I not needed (AJ+2026). 

Coll strengths: All ions and levels needed - Kr II from AJ+2026, Kr III and Kr IV from Schöning 1997.

RR/PI: Sterling 2011, all ions

DR: Sterling 2011, all ions

NTI: --