The rename
Node 24153 was registered as the Insurability Index. Premium levels and coverage availability are not publicly obtainable at the locality grain this node operates at. The Insurance Council of Australia data it draws on answers a narrower question: whether a locality’s postcode has any recorded catastrophe event on file, 2013–2026. It is now named the Catastrophe History Index.
Reading the certified value
The node certifies as a presence/absence signal, not a rate or severity score. A small number of source events span many postcodes at once — widespread floods and cyclones — so most Australian localities carry a “has recorded history” reading over this window, and the certified values cluster into two bands. The node is excluded from its parent composite’s coverage-confidence propagation.
