Sink hole paradigm testing

These are the latest test results for the paradigm for evaluation of this theory. It is cutting edge data awaiting peer review (Ian Gibson, March 2026). This document presents the complete "Gibson Gradient" from multi-frequency radio surveys (TGSS 150 MHz and NVSS 1.4 GHz) across voids, filaments, clusters and superclusters. It includes the full observed excesses table, the empirical transition from suction (negative) to overflow (positive), and the formal definition of the Gibson Density Limit (ρ_c). The results show a systematic density-dependent pattern consistent with environmentally modulated ultra-light scalar dark matter decay under chameleon-like screening. This is an update to the main Sinkhole Paradigm record: https://zenodo.org/records/18708898 Keywords: Sinkhole Paradigm, dark matter decay, cosmic voids, radio excess, LoTSS DR2, TGSS, NVSS, chameleon screening, Gibson Density Limit