=== INTERLEAVED Format ===
[0] TileID=0, run=1, len=7
[1] TileID=104, run=410, len=1
[2] TileID=515, run=1, len=2
[3] TileID=519, run=1, len=1
[4] TileID=521, run=1, len=3
[5] TileID=523, run=26243, len=13
[6] TileID=26767, run=4, len=1
[7] TileID=26772, run=2, len=1
[8] TileID=26775, run=3, len=13
[9] TileID=26781, run=104972, len=53

=== COLUMNAR Format ===
[0] TileID=0, run=1, len=334
[1] TileID=2, run=1, len=346
[2] TileID=10, run=1, len=423
[3] TileID=36, run=1, len=558
[4] TileID=140, run=1, len=950
[5] TileID=551, run=1, len=419
[6] TileID=553, run=1, len=2215
[7] TileID=2195, run=1, len=570
[8] TileID=2197, run=1, len=2263
[9] TileID=2199, run=1, len=929

=== Analysis ===
For clustered PMTiles, run should be 1 (each tile is unique).
Which format has run=1?

Interleaved avg run: 13164
Columnar avg run: 1

✓ COLUMNAR format is correct!