condition mean min max 4 h after light 9.83934 8.52938 11.1493 8 h after light 6.976285 6.08796 7.86461 12 h after light 7.922915000000001 6.3009 9.54493 4 h after dark 12.857633333333334 11.433 15.6181 8 h after dark 10.466523333333333 9.23197 11.136 12 h after dark 10.331056666666667 7.47563 13.8961