Kendall tau rank correlations for all pairs of data series
pair	tau	p-value
tau( Totaal , EGKS )	0.0343622849016685	0.653520814294323
tau( Totaal , buizen )	0.638839444582478	2.22044604925031e-16
tau( Totaal , NEGKS )	0.77113410791012	0
tau( Totaal , Nferro )	0.96117900259227	0
tau( Totaal , gieten )	0.525248475185645	7.18469728155924e-12
tau( EGKS , buizen )	0.0305895662354481	0.695360555144108
tau( EGKS , NEGKS )	0.107274085916079	0.161307225579333
tau( EGKS , Nferro )	0.00286216285915849	0.970161933336073
tau( EGKS , gieten )	-0.0421927705307138	0.58314642474497
tau( buizen , NEGKS )	0.623894884037791	1.11022302462516e-15
tau( buizen , Nferro )	0.618439785955687	1.99840144432528e-15
tau( buizen , gieten )	0.561979444039004	6.65467680960319e-13
tau( NEGKS , Nferro )	0.744451826935347	0
tau( NEGKS , gieten )	0.544300400565001	1.25388588401165e-12
tau( Nferro , gieten )	0.495390063020161	9.9846353407429e-11