one (0x31) lsb: 37.0
one (0x31) rsb: 37.0
one (0x31) right x-extrema: 301.0
one (0x31) x-advance: 338
seven (0x37) lsb: 27.0
seven (0x37) rsb: 57.0
one (0x37) right x-extrema: 387.0
Original kerning value: 0.000 em
Original kerned x-advance: 0.338 em
Original x-extrema offset: 0.064 em
Original in-ascender x-extrema offset: 0.064 em
Autokern
one (0x31) lsb: 11.0
one (0x31) rsb: 1.0
one (0x31) right x-extrema: 275.0
one (0x31) x-advance: 276
seven (0x37) lsb: -2.0
seven (0x37) rsb: 14.0
one (0x37) right x-extrema: 358.0
Autokern kerning value: -0.051 em
Autokern kerned x-advance: 0.225 em
Autokern x-extrema overlap: 0.052 em
Autokern in-ascender x-extrema overlap: 0.052 em