condition mean min max 4 h after light 507.3462475 374.047021 640.645474 8 h after light 475.3388255 441.163462 509.514189 12 h after light 392.05017999999995 373.385903 410.714457 4 h after dark 517.973116 427.714175 608.232057 8 h after dark 551.2117805 445.94062 656.482941 12 h after dark 409.30898 409.30898 409.30898