condition mean min max 4 h after light 1103.9415725 1077.304934 1130.578211 8 h after light 1246.2147605 1130.578211 1361.85131 12 h after light 1367.1308915 1291.222342 1443.039441 4 h after dark 1304.73076 1295.768214 1313.693306 8 h after dark 1035.3545315000001 955.023585 1115.685478 12 h after dark 865.580344 865.580344 865.580344