condition mean min max 2 h after light 92.45755 80.1646 99.2725 6 h after light 67.3594 57.4139 78.048 10 h after light 57.99101666666667 47.0997 89.3239 14 h after light 53.06445 39.1969 62.8494 18 h after light 61.00225 51.3511 76.6355 2 h after dark 58.81285 51.3267 66.0244