one (0x31) lsb: 37.0
one (0x31) rsb: 37.0
one (0x31) right x-extrema: 301.0
one (0x31) x-advance: 338
three (0x33) lsb: 6.0
three (0x33) rsb: 37.0
one (0x33) right x-extrema: 394.0
Original kerning value: 0.000 em
Original kerned x-advance: 0.338 em
Original x-extrema offset: 0.043 em
Original in-ascender x-extrema offset: 0.074 em
Autokern
one (0x31) lsb: 11.0
one (0x31) rsb: 1.0
one (0x31) right x-extrema: 275.0
one (0x31) x-advance: 276
three (0x33) lsb: -18.0
three (0x33) rsb: 5.0
one (0x33) right x-extrema: 370.0
Autokern kerning value: -0.069 em
Autokern kerned x-advance: 0.207 em
Autokern x-extrema overlap: 0.086 em
Autokern in-ascender x-extrema overlap: 0.055 em