condition mean min max 0 h after light 6.211045 5.46218 6.95991 4 h after light 5.18765 4.61196 5.76334 8 h after light 6.855 6.58908 7.12092 4 h after dark 8.039674999999999 7.76449 8.31486 8 h after dark 7.1557949999999995 7.07838 7.23321 12 h after dark 6.131375 5.85091 6.41184