condition mean min max 4 h after light 1542.665985 1505.413115 1579.918855 8 h after light 1431.5073790000001 1398.912923 1464.101835 12 h after light 1386.4826745 1301.733292 1471.232057 4 h after dark 1126.2988295 883.943506 1368.654153 8 h after dark 985.0031084999999 680.924364 1289.081853 12 h after dark 1368.654153 1368.654153 1368.654153