condition mean min max 0 h after light 2.254375 1.61927 2.88948 4 h after light 2.6360599999999996 2.578 2.69412 8 h after light 3.482145 3.20405 3.76024 4 h after dark 4.432735 3.97583 4.88964 8 h after dark 3.276295 2.86465 3.68794 12 h after dark 2.4195450000000003 2.02137 2.81772