condition mean min max 4 h after light 1344.409632 935.202592 1753.616672 8 h after light 1579.7725930000001 1450.30898 1709.236206 12 h after light 1415.7181775 928.30898 1903.127375 4 h after dark 764.892018 333.462826 1196.32121 8 h after dark 552.377868 352.817088 751.938648 12 h after dark 665.615468 665.615468 665.615468