The rear third runs 9 points emptier than the front on busy departures.
Over departures that left at least half full, when a seat is in question. Carriages are numbered from the front in the direction of travel, so this holds whichever way you are going.
How full, by hour
6a
12p
6p
12a
Median load of trains leaving in each hour, over 28 weekdays. The day runs 4am to 4am, as the railroad's does.