All disparity:
questiondown ¿ (191 0xbf) vs. question ? (63 0x3f)
The top 25 disparities between the original kerning and Autokern's kerning, in descending order.
Original
The original kerning from the input.
questiondown (0xBF) lsb: 20.0
questiondown (0xBF) rsb: 12.0
questiondown (0xBF) right x-extrema: 303.0
questiondown (0xBF) x-advance: 315
question (0x3F) lsb: 12.0
question (0x3F) rsb: 20.0
questiondown (0x3F) right x-extrema: 295.0
Original kerning value: 0.000 em
Original kerned x-advance: 0.315 em
Original x-extrema offset: 0.024 em
Original in-ascender x-extrema offset: 0.109 em
Autokern
questiondown (0xBF) lsb: -3.0
questiondown (0xBF) rsb: -18.0
questiondown (0xBF) right x-extrema: 280.0
questiondown (0xBF) x-advance: 262
question (0x3F) lsb: 0.0
question (0x3F) rsb: 4.0
questiondown (0x3F) right x-extrema: 283.0
Autokern kerning value: -0.090 em
Autokern kerned x-advance: 0.172 em
Autokern x-extrema overlap: 0.108 em
Autokern in-ascender x-extrema overlap: 0.023 em