condition	mean	min	max
4 h after light	6.5185466666666665	6.29699	6.8162199999999995
8 h after light	8.175133333333333	7.85561	8.481639999999999
12 h after light	7.64628	7.2462100000000005	8.22986
4 h after dark	7.253046666666666	7.066839999999999	7.57149
8 h after dark	6.946153333333333	6.72885	7.283919999999999
12 h after dark	6.4175699999999996	6.18254	6.7948699999999995