condition mean min max 4 h after light 1192.9430945 1190.208823 1195.677366 8 h after light 1093.1955795 1049.317329 1137.07383 12 h after light 1188.370781 1044.240783 1332.500779 4 h after dark 1036.109159 927.390607 1144.827711 8 h after dark 940.3203255000001 691.140072 1189.500579 12 h after dark 1014.71217 1014.71217 1014.71217