condition mean min max 4 h after light 2.075295 1.3969 2.75369 8 h after light 2.168285 2.12277 2.2138 12 h after light 3.7118349999999998 2.522 4.90167 4 h after dark 3.8221266666666667 3.12072 4.36987 8 h after dark 3.3103766666666665 3.02394 3.88294 12 h after dark 2.68476 1.8097 3.99999