condition mean min max 0 h after light 7.758055000000001 7.628 7.88811 4 h after light 4.288625 3.77772 4.79953 8 h after light 3.71979 3.61405 3.82553 4 h after dark 5.70748 5.61496 5.8 8 h after dark 7.058285 6.85484 7.26173 12 h after dark 8.829839999999999 7.79522 9.86446