four (0x34) lsb: 37.0
four (0x34) rsb: 37.0
four (0x34) right x-extrema: 563.0
four (0x34) x-advance: 600
five (0x35) lsb: 17.0
five (0x35) rsb: 44.0
four (0x35) right x-extrema: 420.0
Original kerning value: 0.000 em
Original kerned x-advance: 0.600 em
Original x-extrema offset: 0.054 em
Original in-ascender x-extrema offset: 0.097 em
Autokern
four (0x34) lsb: -6.0
four (0x34) rsb: -1.0
four (0x34) right x-extrema: 520.0
four (0x34) x-advance: 519
five (0x35) lsb: -12.0
five (0x35) rsb: 6.0
four (0x35) right x-extrema: 391.0
Autokern kerning value: -0.074 em
Autokern kerned x-advance: 0.445 em
Autokern x-extrema overlap: 0.087 em
Autokern in-ascender x-extrema overlap: 0.044 em