condition mean min max 4 h after light 3.93102 3.53288 4.32916 8 h after light 2.87087 1.90823 3.83351 12 h after light 1.54568 0.0 3.09136 4 h after dark 5.496895 4.07402 6.91977 8 h after dark 4.4278200000000005 2.55201 6.30363 12 h after dark 2.56013 1.00498 4.11528