cl=0  knee1=4230.4  knee2=21932.1
cl=0.1  knee1=4230.5  knee2=21933.4
cl=0.25  knee1=4230.8  knee2=21935.4
cl=0.5001  knee1=4231.2  knee2=21938.8
cl=0.75  knee1=4231.7  knee2=21942.1
cl=1.0  knee1=4232.1  knee2=21945.4
cl=1.5  knee1=4233.0  knee2=21952.1