Well, after reading in the FR i have found:

Critical temperature limits for the start of the enrichment

TKIVKBTS 1100◦C Critical Kat temperature precat for BTS
TANVKBTS 950 ◦C Critical exhaust temperature after precat
TAVHKBTS 900 ◦C Critical exhaust gas temperature before the main kat
TKIHKBTS 900 ◦C Critical Kat temperature in the main kat
TAIKRBTS 1200◦C Critical exhaust gas temperature in the manifold
TAVROBTS 1200◦C Critical exhaust gas temperature in the pipe pieces before precat
TAVVKBTS 900 ◦C Critical exhaust gas temperature before precat

There is no TABGBTS.