condition mean min max 0 h after light 2.0874499999999996 2.0462 2.1287 4 h after light 3.197935 2.97444 3.42143 8 h after light 3.598705 3.52493 3.67248 4 h after dark 3.59489 3.54262 3.64716 8 h after dark 3.4116150000000003 3.37404 3.44919 12 h after dark 2.376435 2.30544 2.44743