condition mean min max 0 h after light 1.056085 0.91435 1.19782 4 h after light 0.888863 0.416076 1.36165 8 h after light 0.5309395 0.417512 0.644367 4 h after dark 0.519037 0.485454 0.55262 8 h after dark 1.183441 0.969792 1.39709 12 h after dark 0.972652 0.961942 0.983362