condition mean min max 0 h after light 1.670255 0.0 3.34051 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 1.60231 0.0 3.20462 12 h after light 3.11655 0.0 6.2331 2 h after dark 1.736665 0.0 3.47333 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 3.24895 3.18557 3.31233