Table 1.

Estimated probability of the rare event and the sample variance σ² as well as the CPU time (in s) with 10⁷ runs of the wNRMps, the wSSAps and the refined wSSA for the single species production-degradation model (31): (a) θ = 65 and 70 and (b) θ = 75 and 80

(a)	θ = 65			θ = 70
		σ 2	Time		σ 2	Time
wNRMps	2.29 × 10-3	5.09 × 10-6	14472	1.68 × 10-4	3.40 × 10-8	16140
wSSAps	2.29 × 10-3	5.10 × 10-6	16737	1.68 × 10-4	3.40 × 10-8	18555
Refined wSSA	2.29 × 10-3	3.39 × 10-5	24340	1.68 × 10-4	4.29 × 10-7	25492
(b)	θ = 75			θ = 80
		σ 2	Time		σ 2	Time
wNRMps	8.42 × 10-6	1.10 × 10-10	15640	2.99 × 10-7	1.82 × 10-13	16260
wSSAps	8.42 × 10-6	1.10 × 10-10	18582	2.99 × 10-7	1.82 × 10-13	18960
Refined wSSA	8.43 × 10-6	3.58 × 10-9	26314	2.99 × 10-7	1.29 × 10-11	26987