Table 1.

Wall-clock times (in hours) for the given number of iterations in the first column for a run without acceleration (−/−); a run with adaptive expectation maximization (adap/−); and a run with both adaptive expectation maximization and local angular searches (adap/local).

Iter	Sampling (°)	−/−	adap/−	adap/local
1–10	7.5	0.8	0.4	ND
11–20	3.8	6.6	0.7	ND
21–30	1.8	56.3	3.1	2.7
31–40	0.9	535	21.6	2.8