Time-lapse · one day, 5 am to 9 pm, home-state time
Night owls, morning people, and one very long day
Press play. The six on the left are angriest before dawn and go quiet as the sun climbs; the three on the right wake up mild and get madder with the daylight. Every face is driven by data — the number under each name is the share of that member's tweets, sent in that hour, that our model scored as angry.
Each member's hourly curve comes from every tweet they sent while in office, bucketed by hour in their home-state time zone and scored for anger. Hours with only a handful of tweets are pooled with their neighbours so nobody's face twitches over a single 2 am post. The gauge at top right is the whole chamber: how far this hour's mean anger sits from the day's average (Chapter 3). The night owls are the six members whose 9 pm–4 am tweets are most angrier than their daytime ones; the morning people are the reverse. Michael Rulli is in the chart but not on the lawn — too few tweets to draw an hourly curve.