condition mean min max 0 h after light 5.98447 5.88375 6.08519 4 h after light 8.39555 7.99955 8.79155 8 h after light 5.494205 4.73242 6.25599 4 h after dark 7.808209999999999 6.45217 9.16425 8 h after dark 9.162605 9.06427 9.26094 12 h after dark 6.22902 5.74444 6.7136