Replication files for: No full solar-time slope in Japan's 2021 prefecture mean wake times

Data and code for a Glasp Research note that sets weekday mean wake times of 46 Japanese prefectures (2021 Survey on Time Use and Leisure Activities, Statistics Bureau of Japan) against the longitude of each prefecture's population centroid, adjusting for latitude and the share of the population in densely inhabited districts. The longitude slope was +0.21 minutes per degree (95% CI -0.84 to +1.27), so both the full solar-time slope (-4 minutes per degree) and half of it lie outside the interval. The note: https://glasp.co/posts/wake-time-and-longitude-japan-prefectures