condition mean min max 4 h after light 60.2886 48.8166 71.7606 8 h after light 59.45765 58.8562 60.0591 12 h after light 69.0228 59.3273 78.7183 4 h after dark 76.349 71.3846 81.3134 8 h after dark 80.77375 74.5654 86.9821 12 h after dark 86.07215 85.7391 86.4052