SGPLOT XAXISTABLE - How to split text values?

[AntjeWestphal]

SAS version: SAS 9.4 TS Level 1M3

Code:

ods graphics on / width=25cm height=15cm;
options nodate nonumber orientation=landscape topmargin="2.5cm" center;
ods html close;
ods pdf file='Z:\Antje\tempSAS\PF4 QK_07.2018.pdf';
ods layout start; ods region x=0cm y=0cm;
PROC SGPLOT DATA = PF4_2;
styleattrs datacontrastcolors=(blue red green magenta yellow black) WALLCOLOR=LTGRAY
             datasymbols=(x);
   SERIES X = Datum2 Y = MW_IgG_posKontr		/ markers lineattrs=(pattern=solid); 
   SERIES X = Datum2 Y = MW_IgG_negKontr		/ markers lineattrs=(pattern=solid);
   SERIES X = Datum2 Y = MW_IgG_posKontr12verd	/ markers lineattrs=(pattern=solid);
   SERIES X = Datum2 Y = MW_IgG_posKontr14verd	/ markers lineattrs=(pattern=solid);
   SERIES X = Datum2 Y = MW_IgG_posKontr18verd	/ markers lineattrs=(pattern=solid);
   xaxistable Charge Beschichtung Konjugat / location=inside;
   keylegend/position=bottom valueattrs=(family=arial) down=10;
   TITLE height=12pt font='arial' 'PF4-Kontrollen IgG Juli 2018';
xaxis label='Juli' labelattrs=(family=arial size=12pt)
valueattrs=(family=arial size=12pt);
yaxis grid gridattrs=(color=black) values=(0 to 3 by 0.5) label='Extinktion' labelattrs=(family=arial size=12pt) valueattrs=(family=arial size=12pt );
where Monat='07/2018'; run;
ods layout end;
ods pdf close;
ods html;

Data: