condition mean min max 4 h after light 3.7589056666666667 3.5992839999999995 3.9914620000000003 8 h after light 2.5778553333333334 1.7179229999999999 3.055648 12 h after light 2.385916 1.8657990000000002 3.288457 16 h after light 3.596352 3.058407 4.196821 4 h after dark 3.996809333333333 2.79241 5.700589 8 h after dark 2.9983226666666667 1.738652 5.247692