condition mean min max 0 h after light 67.9808 64.6208 71.3408 4 h after light 59.102850000000004 57.7025 60.5032 8 h after light 56.47355 56.3135 56.6336 4 h after dark 92.271 90.7714 93.7706 8 h after dark 80.3841 79.3074 81.4608 12 h after dark 73.9142 71.4582 76.3702