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 0.00218567 0.0 0.00437134 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0605285 0.0 0.101408 12 h after dark 0.0 0.0 0.0