condition mean min max 4 h after light 1392.0755085 1132.109192 1652.041825 8 h after light 1269.6259415 1253.289552 1285.962331 12 h after light 1438.6150585 1294.946981 1582.283136 4 h after dark 2221.588687 1591.005049 2852.172325 8 h after dark 2787.907283 1801.659432 3774.155134 12 h after dark 1665.77244 1665.77244 1665.77244