condition mean min max 0 h after light 8.62819 8.53181 8.72457 4 h after light 9.586745 7.83779 11.3357 8 h after light 8.162235 7.319 9.00547 4 h after dark 10.6358 9.0258 12.2458 8 h after dark 11.24235 11.2394 11.2453 12 h after dark 9.818280000000001 9.61996 10.0166