Table 3.

Penumbra measured by DUO, EBT3, and SFD in both X profiles and Y profiles

Cone	Penumbra (mm)						Differences (mm)
	X profile			Y profile			DUO/EBT3		DUO/SFD
mm	DUO	EBT3	SFD	DUO	EBT3	SFD	X profile	Y profile	X profile	Y profile
5	2.04	2.00	1.60	1.81	1.80	1.80	0.04	0.01	0.44	0.01
7.5	2.50	2.60	2.20	2.27	2.00	1.90	−0.10	0.27	0.30	0.37
10	2.50	2.80	2.20	2.50	2.20	1.80	−0.30	0.30	0.30	0.70
12.5	2.96	3.00	2.60	2.47	2.60	2.20	−0.04	−0.13	0.36	0.27
15	2.96	3.20	2.50	2.50	2.80	2.20	−0.24	−0.30	0.46	0.30
20	2.50	3.20	2.80	2.73	3.20	2.20	−0.70	−0.47	−0.30	0.53
25	3.19	3.40	3.00	2.96	3.20	3.00	−0.21	−0.22	0.19	−0.04
30	3.42	3.60	3.30	3.19	3.20	3.60	−0.18	−0.01	0.12	−0.41
35	3.65	3.80	3.60	3.19	3.80	2.60	−0.15	−0.61	0.05	0.59
40	3.65	4.00	3.30	3.19	3.80	3.10	−0.35	−0.61	0.35	0.09