Every cell of the grid at the source file's own heavy-user threshold of 3, with a 95% interval from the Katz log method. The bolded rows are the ones whose interval includes 1 — arithmetically correct, and indistinguishable from no difference at all.

cutoff	ratio	95% interval	heavy flagged	others flagged
≥ 5	1.21×	1.14 – 1.28	1,579	936
≥ 6	1.24×	1.16 – 1.33	1,390	801
≥ 7	1.27×	1.18 – 1.37	1,227	691
≥ 8	1.29×	1.19 – 1.40	1,069	592
≥ 9	1.31×	1.20 – 1.44	944	514
≥ 10	1.33×	1.21 – 1.47	827	444
≥ 11	1.33×	1.19 – 1.49	726	390
≥ 12	1.38×	1.23 – 1.55	654	339
≥ 13	1.40×	1.23 – 1.59	585	299
≥ 14	1.43×	1.24 – 1.63	524	263
≥ 15	1.50×	1.29 – 1.74	460	220
≥ 16	1.45×	1.24 – 1.70	414	204
≥ 17	1.51×	1.27 – 1.79	364	173
≥ 18	1.54×	1.28 – 1.85	322	150
≥ 19	1.58×	1.30 – 1.91	302	137
≥ 20	1.60×	1.30 – 1.96	272	122
≥ 21	1.70×	1.35 – 2.14	233	98
≥ 22	1.93×	1.50 – 2.48	213	79
≥ 23	1.95×	1.49 – 2.55	188	69
≥ 24	2.00×	1.50 – 2.68	168	60
≥ 25	2.16×	1.58 – 2.95	154	51
≥ 26	2.45×	1.73 – 3.47	137	40
≥ 27	2.32×	1.61 – 3.34	120	37
≥ 28	2.35×	1.59 – 3.47	105	32
≥ 29	2.60×	1.70 – 3.96	98	27
≥ 30	2.68×	1.72 – 4.19	90	24

across the whole grid
cells in the grid	130
interval clear of 1	92 (70.8%)
ratio range	1.15× – 2.97×

The weak cells cluster at the extremes, where the flagged group shrinks to a few dozen teenagers. That is exactly where the most quotable ratios live.