condition mean min max 0 h after light 167.3285 157.85 176.807 4 h after light 166.0575 164.658 167.457 8 h after light 126.662 120.905 132.419 4 h after dark 186.9885 177.785 196.192 8 h after dark 191.94600000000003 182.151 201.741 12 h after dark 164.1415 163.058 165.225