condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.061352 0.0 0.122704 8 h after light 0.1191415 0.0 0.238283 4 h after dark 0.2963815 0.236544 0.356219 8 h after dark 0.119103 0.118603 0.119603 12 h after dark 0.120263 0.0 0.240526