condition mean min max 4 h after light 9.739330500000001 9.668262 9.810399 8 h after light 9.810399 9.810399 9.810399 12 h after light 9.581887 9.331114 9.83266 4 h after dark 9.703236 9.451992 9.95448 8 h after dark 8.898225 7.986051 9.810399 12 h after dark 10.642576 10.642576 10.642576