condition mean min max 0 h after light 2.9851400000000003 2.7164 3.25388 4 h after light 5.531415 5.16868 5.89415 8 h after light 6.1711849999999995 5.90189 6.44048 4 h after dark 4.538845 3.19572 5.88197 8 h after dark 5.898475 5.56566 6.23129 12 h after dark 3.7380050000000002 2.70792 4.76809