condition mean min max 4 h after light 7.069886666666667 6.12956 8.01585 8 h after light 7.1486600000000005 6.18405 8.771410000000001 12 h after light 7.02433 6.11249 8.11805 4 h after dark 7.0713 5.71087 8.1052 8 h after dark 6.8991999999999996 6.20585 8.00049 12 h after dark 7.339173333333334 6.557230000000001 7.81198