Line Calculator for CPW with narrow Gap

I want to calculate line width for CPW(Coplanar Waveguide) without Bottom Side Ground.

My parameters are following.
Er=4.3
tanD=0.018
H=0.2mm
S=0.067mm
Tmet=0.035mm
Conductivity of Copper=5.813e7[Sie/m]
Resisitivty of Copper=1.72e8[Ohm*m]
Z0=50ohm

When I use http://wcalc.sourceforge.net/coplanar.html,
it returns range error.
See attached figure.

I also tried line calculator on KiCad.
However it also failed.

On the other hand, I can calculate W, if I use LineCalc on Keysight ADS.
See https://www.edaboard.com/attachment....6&d=1494216730

Is there any free line calculator which is valid for CPW with narrow Gap ?

http://www.awrcorp.com/products/addi...ine-calculator

I have old TX-Line.
It also can not calculate.