tiles non conforming to the naming convention

[andreapago]

Deal with the tiles non conforming to the naming convention
E.g.,

/data3/SVFdata2/tile_9_5/ahn_191000_420000_191500_420500.laz
/data3/SVFdata2/tile_9_5/ahn_191000_420000_191500_420000.laz
/data3/SVFdata2/tile_9_5/ahn_191000_420000_191000_420000.laz
/data3/SVFdata2/tile_9_5/ahn_191000_420000_191000_420500.laz

/data3/SVFdata2/tile_9_5/ahn_190000_421000_190500_421000.laz
/data3/SVFdata2/tile_9_5/ahn_190000_421000_190500_421500.laz
/data3/SVFdata2/tile_9_5/ahn_190000_421000_190000_421500.laz
/data3/SVFdata2/tile_9_5/ahn_190000_421000_190000_421000.laz