condition	mean	min	max
4 h after light	2.62665	2.2202	3.0331
8 h after light	3.00091	2.85956	3.14226
12 h after light	1.84851	1.82737	1.86965
4 h after dark	3.578005	2.92429	4.23172
8 h after dark	2.938015	2.62918	3.24685
12 h after dark	3.519365	3.39465	3.64408