(a).

Method	CF	PCF	MIC	MI	WCF	CH
CF	0	48.77	13.90	11.10	22.00	30.70
PCF	48.77	0	47.48	50.36	44.32	40.34
MIC	13.90	47.48	0	14.85	23.80	27.81
MI	11.10	50.36	14.85	0	22.61	31.73
WCF	22.00	44.32	23.80	22.61	0	34.30
CH	30.70	40.34	27.81	31.73	34.30	0
Total	126.4	231.27	127.84	130.65	147.03	164.88