condition mean min max 4 h after light 64.41775 52.7246 76.1109 8 h after light 59.90305 57.126 62.6801 12 h after light 74.3736 63.0937 85.6535 4 h after dark 79.71556666666666 69.7115 85.9853 8 h after dark 86.8939 78.6136 97.2065 12 h after dark 77.7684 73.6048 81.8966