condition mean min max 4 h after light 1.73181 1.33439 2.12923 8 h after light 4.46452 4.43732 4.49172 12 h after light 8.108485 8.0461 8.17087 4 h after dark 6.76982 6.24242 7.15046 8 h after dark 3.9780633333333335 3.95025 4.01564 12 h after dark 1.9592 1.64934 2.12277