condition mean min max 4 h after light 5.76302 5.431369999999999 6.01819 8 h after light 5.634526666666667 5.349019999999999 5.8426800000000005 12 h after light 6.026463333333333 5.63859 6.2746699999999995 4 h after dark 5.942843333333333 5.53693 6.2375300000000005 8 h after dark 5.94714 5.46293 6.23449 12 h after dark 6.362833333333334 5.91549 6.70661