condition mean min max 3 h after light 67.3517 62.5694 72.1462 6 h after light 64.83503333333333 57.3723 74.7092 9 h after light 75.5728 68.2762 80.97 12 h after light 75.71594999999999 67.7991 81.7433 3 h after dark 76.21076666666667 71.8859 79.1877 6 h after dark 91.7703 86.4435 94.509 9 h after dark 85.368 77.3236 91.8171 12 h after dark 82.1045 79.3185 84.8905