condition mean min max 4 h after light 342.766363 231.916054 453.616672 8 h after light 331.1561405 285.11492 377.197361 12 h after light 358.562976 334.363752 382.7622 4 h after dark 270.1077545 237.987446 302.228063 8 h after dark 242.609927 188.691102 296.528752 12 h after dark 316.274095 316.274095 316.274095