When the arc of light has a full 48 hours to grow (assuming only the first two post-conjunction moonsets are relevant), what prevents seeing crescents down to nearly zero lag?
The moonset lag is the difference between time of sunset and time of moonset.
Columns 14-15 give the UT moonset (or moonrise) moment in hours and minutes.
Columns 16-19 are the astrometric geocentric (equator J2000) right ascension and declination of the sun, in hours, minutes, degrees, and arc minutes, at the mid-lag moment between sunset and moonset.
This study uses the mid-lag moment, but in fact any standardized point of time in the range from sunset to moonset is suitable as long as it is used consistently across all the events that are being intercompared on an equal footing.