condition	mean	min	max
4 h after light	8.008953333333334	7.7797600000000005	8.2276
8 h after light	7.463653333333333	7.271139999999999	7.68509
12 h after light	8.05814	7.7515	8.23477
4 h after dark	7.5194	7.21507	7.84876
8 h after dark	7.848743333333334	7.59364	8.188880000000001
12 h after dark	7.968016666666667	7.79415	8.27234