condition mean min max 4 h after light 5.032765 4.94026 5.12527 8 h after light 4.49847 4.41734 4.5796 12 h after light 6.470935000000001 6.07361 6.86826 4 h after dark 11.3494 10.8951 11.8037 8 h after dark 10.56415 10.4087 10.7196 12 h after dark 9.21389 8.48038 9.9474