condition mean min max 4 h after light 9.7344535 9.490313 9.978594 8 h after light 7.502196 7.490009 7.514383 12 h after light 7.8076384999999995 7.569555 8.045722 4 h after dark 7.747184 7.130761 8.363607 8 h after dark 8.37895 7.982031 8.775869 12 h after dark 8.860686 8.860686 8.860686