condition mean min max 4 h after light 1.664225 1.44431 1.88414 8 h after light 1.56129 1.55466 1.56792 12 h after light 1.52691 1.34703 1.70679 4 h after dark 1.8578833333333333 1.67785 2.01435 8 h after dark 1.78967 1.70626 1.94314 12 h after dark 1.4664366666666666 1.27642 1.62943