condition mean min max 0 h after light 0.1633665 0.081574 0.245159 4 h after light 0.5710635 0.498707 0.64342 8 h after light 0.3263185 0.249112 0.403525 4 h after dark 0.360997 0.241298 0.480696 8 h after dark 0.4044095 0.16068 0.648139 12 h after dark 0.363041 0.31876 0.407322