condition	mean	min	max
4 h after light	4.10979	4.0156	4.26539
8 h after light	4.095859999999999	4.056369999999999	4.141769999999999
12 h after light	4.177973333333334	3.9473800000000003	4.54405
4 h after dark	4.04022	4.00962	4.08839
8 h after dark	4.14905	3.98109	4.41288
12 h after dark	4.013143333333333	3.97347	4.05626