condition mean min max 4 h after light 1596.3934195 1395.761857 1797.024982 8 h after light 1225.1284345 1142.760351 1307.496518 12 h after light 1391.6086405 1274.642943 1508.574338 4 h after dark 1159.8030135 1042.023723 1277.582304 8 h after dark 1250.9591905 1150.34017 1351.578211 12 h after dark 1453.774143 1453.774143 1453.774143