condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.16916466666666666 0.0 0.507494 4 h after dark 0.264727 0.0 0.794181 8 h after dark 0.0 0.0 0.0 12 h after dark 0.12395066666666667 0.0 0.371852