condition mean min max 4 h after light 3.736219666666667 3.6119230000000004 3.913247 8 h after light 2.641188 1.7396470000000002 3.246424 12 h after light 2.232305 1.873056 2.730073 16 h after light 4.661743333333334 3.4159580000000003 6.4435720000000005 4 h after dark 4.4677750000000005 2.79295 7.758594 8 h after dark 2.0907526666666665 1.696532 2.4262669999999997