Table 5 Results of normalized tree...

Table 5

Results of normalized tree length

Type is Kendall's tau	${N T L}_{B e f o r e}$	${N T L}_{A f t e r}$	Change
$τ$	1.1537	1.1787	Increasing = 0.0250
$τ_{U}$	1.2805	1.1906	Decreasing = 0.0899
$τ_{L}$	1.1059	1.2224	Increasing = 0.1165

Note(s): NTL is normalized tree length values. before is period 1, after is period 2