condition mean min max 3 h after light 8.842756666666666 7.16689 11.0679 6 h after light 7.0898433333333335 6.6041 7.89465 9 h after light 16.742 15.9859 17.1844 12 h after light 37.365075 19.0413 50.1053 3 h after dark 53.1175 48.4407 60.5949 6 h after dark 78.91643333333333 75.9394 81.9831 9 h after dark 59.33383333333333 50.2729 66.844 12 h after dark 22.19045 19.135 25.2459