condition mean min max 0 h after light 65.0735 64.0864 66.0606 4 h after light 358.4145 285.373 431.456 8 h after light 583.359 568.239 598.479 4 h after dark 86.59345 82.7236 90.4633 8 h after dark 171.5445 159.534 183.555 12 h after dark 97.69495 53.8759 141.514