I fiddled with your version and changed the colours to a heatmap-like colour scheme adapted from https://stackoverflow.com/questions/12875486/what-is-the-algori

I fiddled with your version and changed the colours to a heatmap-like colour scheme adapted from https://stackoverflow.com/questions/12875486/what-is-the-algorithm-to-create-colors-for-a-heatmap https://stackoverflow.com/questions/12875486/what-is-the-alg... This shows the pattern again:https://imgur.com/qR4iGJb https://imgur.com/qR4iGJb Further fiddling ~shows~ highlights more patterns: https://imgur.com/a/Yjln2RX https://imgur.com/a/Yjln2RX