condition mean min max 4 h after light 11.7501745 11.681506 11.818843 8 h after light 11.430888 11.401047 11.460729 12 h after light 11.430888 11.401047 11.460729 4 h after dark 12.726634 11.805043 13.648225 8 h after dark 11.246243499999999 10.945523 11.546964 12 h after dark 10.244869 10.244869 10.244869