three (0x33) lsb: 22.0
three (0x33) rsb: 26.0
three (0x33) right x-extrema: 309.0
three (0x33) x-advance: 335
one (0x31) lsb: 12.0
one (0x31) rsb: 40.0
three (0x31) right x-extrema: 192.0
Original kerning value: 0.000 em
Original kerned x-advance: 0.335 em
Original x-extrema offset: 0.038 em
Original in-ascender x-extrema offset: 0.038 em
Autokern
three (0x33) lsb: 15.0
three (0x33) rsb: 19.0
three (0x33) right x-extrema: 302.0
three (0x33) x-advance: 321
one (0x31) lsb: 4.0
one (0x31) rsb: 28.0
three (0x31) right x-extrema: 184.0
Autokern kerning value: -0.012 em
Autokern kerned x-advance: 0.309 em
Autokern x-extrema offset: 0.011 em
Autokern in-ascender x-extrema offset: 0.011 em