Positive CTL region
The positive CTL region was a region in the Bajoran wormhole. The region was located between the GBF membrane and the negative CTL region. 

On the chart "The Tunnel in the Sky", which was seen in the schoolroom aboard Deep Space 9 in 2369, the positive CTL region was one of the components labeled on a map of the wormhole. ()

See also
Positive CTL
Cartography