Table 2.

Reliability weights used for estimating the reliability parameter $o$.

Variable	Case	Value
t	a/r	0.25
t	r	0.5
t	a	0.5
t	r+a/r	0.7
t	a+a/r	0.7
t	a+r	1.0
t	a+r+a/r	1.0
w	−3.0 unknown	0.7
w	−2.0 fibers of passage	0.0
w	−1.0 not clear	0.8
w	−0.5 exists	0.9
w	0.0 not present	−1.0
w	0.5 very light	1.0
w	1.0 light / sparse	1.0
w	1.5 light / moderate	1.0
w	2.0 moderate / dense	1.0
w	2.5 moderate / strong	1.0
w	3.0 strong	1.0
w	4.0 very strong	1.0

Value: reliability weight of connection strength, t: variable of reliability weight for transport directions of tracers, w- variable of reliability weight for strengths of connections, a: anterograde tracer transport, r: retrograde tracer transport, a/r: bidirectional tracer transport. a+r+a/r means that a connection has been proved by an anterograde, a retrograde and a bidirectional transported tracer.