condition mean min max 4 h after light 7.12366 6.95286 7.356839999999999 8 h after light 7.193980000000001 7.1073 7.28188 12 h after light 7.495546666666667 7.238630000000001 7.82959 4 h after dark 7.39674 7.26255 7.658860000000001 8 h after dark 7.340843333333334 7.20985 7.4183 12 h after dark 7.17889 7.09519 7.3024