Table 1.

Mean disparities in size of moon when perceived at half distance, relative to reference moon (A) and when perceived as half-size relative to original (B)

Subject	MH	ME	SEH	SEE
	(A) Half-distance data
W.H.	6.293	21.976	0.259	1.189
B.B.	16.877	26.649	1.564	1.242
F.D.	5.409	23.158	0.334	1.027
W.Y.	10.071	48.817	0.534	1.948
L.K.	3.132	20.292	0.203	0.242
	(B) Half-size data
W.H.	52.382	215.308	1.385	8.703
B.B.	69.599	73.209	1.611	2.012
F.D.	51.983	92.365	1.230	4.463
M.S.	33.931	39.964	2.953	1.501
L.K.	23.777	34.618	0.482	0.797

(A) Mean disparities of elevated and horizon variables and moons relative to reference moons in arc-min, at half-distance for each of five subjects, and SE. (B) Mean disparities and distances of moon when adjudged to be one-half its original size. M_H, horizon moon; M_E, elevated moon; SE_H and SE_E, estimates of standard errors in perception of horizon and elevated moons, respectively.