The goal is to find out the formula to calculate the appropriate zoom level, or equivalent: to calculate the size of the world viewport depending on, well, dunno. Data collected using bea9a124317, on 2015-08-25 *iirc*. (-> stats.pickle.xz) Data analyzed using ea4515d0516, with: python analyze.py stats.pickle > temp then manually, create win.{size,mass}.{1,2,3,4,5,6} by cutting the analyze.py output into pieces (depending on number of cells). view with gnuplot win.{size,mass}.gnuplot the gray lines in win.size.gnuplot denote the filtering conditions of filter_data.py Then merge and filter the data using cat win.size.[123456] | python filter_data.py > win.size.all.filtered win.size.gnuplot will automatically fit a "a * size**b" - like function. Result: visible diagonal = 369.399 * sum(sizes)**0.431776 Also, analyze.py tells us that the viewport ratio is 1.7 : 1