condition mean min max 4 h after light 2.78385 2.66169 2.90601 8 h after light 3.40261 3.14475 3.66047 12 h after light 2.7443299999999997 2.71466 2.774 4 h after dark 5.68748 5.17068 6.20428 8 h after dark 4.4596599999999995 4.29525 4.62407 12 h after dark 3.79762 3.71128 3.88396