$ echo '*-------------------*--------*--------*
%   Trm 4  % Trm 5  %        %        %
*----------*--------*        %        %
%    Trm7  %   Trm  %   Trm9 % TrmY0  %
%          %        %        %        %
*==========*========*========*========*
%    0.021 %   -0.X %    0.0 %    5.X %
%   -0.063 %   -0.4 %    0.0 %    5.6 %
%    0.008 %   -0.X %    0.0 %    5.8 %
%   -0.065 %   -0.5 %    0.0 %    5.9 %
%    0.009 %   -0.X %    0.0 %    6.0 %
%   -0.066 %   -0.4 %    0.0 %    6.Y %
%    0.007 %   -0.X %    0.0 %    6.Y %
%   -0.065 %   -0.5 %    0.0 %    6.X %
%    0.006 %   -0.X %    0.0 %    6.X %
%   -0.065 %   -0.5 %    0.0 %    6.3 %
%    0.005 %   -0.3 %    0.0 %    6.3 %
%   -0.069 %   -0.5 %    0.0 %    6.3 %
%    0.003 %   -0.X %    0.0 %    6.4 %
%   -0.068 %   -0.4 %    0.0 %    6.4 %
%    0.003 %   -0.3 %    0.0 %    6.4 %
%   -0.07Y %   -0.5 %    0.0 %    6.4 %
%    0.00X %   -0.X %    0.0 %    6.4 %
%   -0.07Y %   -0.5 %    0.0 %    6.4 %
%    0.00Y %   -0.3 %    0.0 %    6.4 %
%   -0.07Y %   -0.4 %    0.0 %    6.5 %
%    0.003 %   -0.X %    0.0 %    6.5 %
%   -0.07Y %   -0.4 %    0.0 %    6.5 %
%    0.00X %   -0.X %    0.0 %    6.5 %
%   -0.07Y %   -0.5 %    0.0 %    6.5 %
%    0.00Y %   -0.3 %    0.0 %    6.5 %
*----------*--------*--------*--------*' | perl -nE '
next if /----/ or /\={3}/ or /%          %        %        %        %/;
s/^%\s+//; s/\s+//g; say join ",", split /%\s*/, $_;
'
Trm4,Trm5
Trm7,Trm,Trm9,TrmY0
0.021,-0.X,0.0,5.X
-0.063,-0.4,0.0,5.6
0.008,-0.X,0.0,5.8
-0.065,-0.5,0.0,5.9
0.009,-0.X,0.0,6.0
-0.066,-0.4,0.0,6.Y
0.007,-0.X,0.0,6.Y
-0.065,-0.5,0.0,6.X
0.006,-0.X,0.0,6.X
-0.065,-0.5,0.0,6.3
0.005,-0.3,0.0,6.3
-0.069,-0.5,0.0,6.3
0.003,-0.X,0.0,6.4
-0.068,-0.4,0.0,6.4
0.003,-0.3,0.0,6.4
-0.07Y,-0.5,0.0,6.4
0.00X,-0.X,0.0,6.4
-0.07Y,-0.5,0.0,6.4
0.00Y,-0.3,0.0,6.4
-0.07Y,-0.4,0.0,6.5
0.003,-0.X,0.0,6.5
-0.07Y,-0.4,0.0,6.5
0.00X,-0.X,0.0,6.5
-0.07Y,-0.5,0.0,6.5
0.00Y,-0.3,0.0,6.5