condition	mean	min	max
4 h after light	19.09215	15.6734	22.5109
8 h after light	16.37125	16.2267	16.5158
12 h after light	18.136	17.52	18.752
4 h after dark	19.834233333333334	18.3148	21.1004
8 h after dark	23.081333333333333	22.8425	23.4396
12 h after dark	18.5962	17.0107	19.3997