Table 2.

showing the Error of ± 3% between actual output and expected output in Gy/min for SAD Technique (SSD@70cm).

Year	Av. Actual Output (Gy/min) Oi	Av. Output using Decay Factor (Gy/min) Ei	% Error (OiEi)/Ei×100
2001	2.7053	2.6855	+ 0.737
2002	2.4203	2.4324	− 0.497
2003	2.1000	2.1300	− 1.408
2004	1.8551	1.8653	− 0.547
2005	1.6154	1.6334	− 1.102
2006	1.4125	1.4304	− 1.251
2007	1.2496	1.2526	− 0.239
2008	1.1115	1.0969	+ 1.331
2009	0.9643	0.9606	+ 0.385
2010	0.8458	0.8411	+ 0.559