condition	mean	min	max
4 h after light	6.88264	6.64302	7.244619999999999
8 h after light	6.85578	6.74235	7.04838
12 h after light	6.6397466666666665	6.49311	6.8579300000000005
4 h after dark	6.3512466666666665	6.22125	6.41654
8 h after dark	6.43599	6.3257900000000005	6.589119999999999
12 h after dark	6.463566666666667	6.28097	6.6737899999999994