CLS to CLS Latency info

Hello there I have been searching for CLS (Cable Landing Station) to CLS latency infirnation for submarine cables. I was able to identify only a handful of them via sales catalogs. I am still missing like 320~ systems, does wnyone have this info available? If i can’t find the data, i am going to formulate from lentgh of fiber diveded by speed of light on fibre (~ +\- resistance) but I really would prefer actual ping ;) This is for www.networkatlas.org project. Thank you in advance! Mehmet -- Mehmet +1-424-298-1903