condition	mean	min	max
4 h after light	7.059733333333333	6.9281	7.15698
8 h after light	7.227883333333333	7.15415	7.284039999999999
12 h after light	7.5318466666666675	7.4278	7.608910000000001
4 h after dark	7.42906	7.3883399999999995	7.46709
8 h after dark	7.270776666666666	7.158639999999999	7.369680000000001
12 h after dark	7.105020000000001	7.007610000000001	7.216880000000001