Test
	1 (Soft-copy computed radiograph)	2 (Screen-film)
Reader (j)	θ̂1j	θ̂2j
1	0.815	0.818
2	0.767	0.836
3	0.831	0.828
4	0.803	0.834
	θ̂1· = .804	θ̂2· = .829