Table A1.

Summary of group sub-profile size for each reporting direction and text format (mean ± standard error). Letter-span size is assessed by summing the information transmitted (bits) through each sub-profile at 11 letter positions (−5 to 5).

Letter position	Reporting direction	Horizontal	Rotated 90° clockwise	Rotated 90° counterclockwise	Marquee
Inner	Normal	44.63 ± 0.79	33.48 ± 1.20	35.60 ± 1.32	32.02 ± 0.92
	Reversed	44.14 ± 1.14	33.06 ± 1.13	33.76 ± 1.32	32.63 ± 1.27
Middle	Normal	43.82 ± 0.87	28.68 ± 1.27	30.12 ± 1.41	26.82 ± 1.00
	Reversed	42.72 ± 1.29	28.33 ± 1.46	27.04 ± 0.96	27.46 ± 1.42
Outer	Normal	49.68 ± 0.23	42.35 ± 1.26	42.55 ± 1.06	40.86 ± 1.02
	Reversed	49.42 ± 0.44	42.52 ± 0.86	41.25 ± 0.99	42.25 ± 0.80