condition mean min max 4 h after light 912.3559895000001 897.675289 927.03669 8 h after light 1956.235874 1666.547384 2245.924364 12 h after light 1456.6362075000002 1161.601051 1751.671364 4 h after dark 762.124004 749.232057 775.015951 8 h after dark 580.462826 545.30898 615.616672 12 h after dark 1234.178024 1234.178024 1234.178024