Letters And Numbers disparity:
one.sub (None) vs. napostrophe ʼn (329 0x149)
The top 25 disparities between the original kerning and Autokern's kerning, in descending order.
Original
The original kerning from the input.
one.sub (None) lsb: 70.0
one.sub (None) rsb: 40.0
one.sub (None) right x-extrema: 304.0
one.sub (None) x-advance: 344
napostrophe (0x149) lsb: 69.0
napostrophe (0x149) rsb: 17.0
one.sub (0x149) right x-extrema: 689.0
Original kerning value: 0.000 em
Original kerned x-advance: 0.344 em
Original x-extrema offset: 0.109 em
Original in-ascender x-extrema offset: 0.195 em
Autokern
one.sub (None) lsb: 5.0
one.sub (None) rsb: -15.0
one.sub (None) right x-extrema: 239.0
one.sub (None) x-advance: 224
napostrophe (0x149) lsb: -19.0
napostrophe (0x149) rsb: 2.0
one.sub (0x149) right x-extrema: 601.0
Autokern kerning value: -0.127 em
Autokern kerned x-advance: 0.097 em
Autokern x-extrema overlap: 0.161 em
Autokern in-ascender x-extrema overlap: 0.075 em