condition mean min max 4 h after light 3.339104 3.0350040000000003 3.7902519999999997 8 h after light 5.757784333333333 2.73115 9.853433 12 h after light 5.154828333333333 2.939165 6.523766999999999 16 h after light 13.655793333333333 11.211110000000001 16.90578 4 h after dark 15.26026 12.342189999999999 18.49517 8 h after dark 7.503607 5.841816000000001 9.145712