Luminance does not affect the daily total number of volunteers who participate in the study.

The table presents the results of OLS regression. luminance (day) is the daily luminance average; luminance (last 2 days) is the sum of the average luminance levels in the past two days.本表格展示了普通最小二乘回归（Ordinary Least Squares, OLS）的回归结果。变量luminance (day)表示日度平均亮度；变量luminance (last 2 days)表示过去两日的平均亮度之和。