condition mean min max 4 h after light 1.311155 0.60799 2.01432 8 h after light 0.7926435000000001 0.636623 0.948664 12 h after light 0.9467570000000001 0.890974 1.00254 4 h after dark 1.160736 0.976448 1.41429 8 h after dark 1.6318533333333334 1.46891 1.84846 12 h after dark 1.46034 1.3084 1.53716