condition mean min max 0 h after light 1.24308 1.24197 1.24419 4 h after light 1.486055 1.30945 1.66266 8 h after light 1.523125 1.49079 1.55546 4 h after dark 1.58724 1.42425 1.75023 8 h after dark 1.683055 1.60499 1.76112 12 h after dark 1.397505 1.37652 1.41849