PEF3 scoreboards show game time (or day time, selectable from command console) and score. Score field could have 1 (0-9) or 2 digits (0-19).
PEF4 scoreboards show game score. Digit height could be 300mm (readability from 150m), 450mm (readability 225m), 600mm (readability 300m), 1000mm (readability 500m) or 1500mm (readability 750m).
Digit height: 300mm
Digit height: 600mm
Digit height: 450mm
Digit height: 1000mm