Table 1.

Running times on unconstrained simulated instances.

Species	Characters	Instances completed within 15 minutes	Min time (sec)	Max time (sec)	Average time (sec)	Standard deviation
10	5	100/100	0.00	0.01	0.00	0.00
10	7	100/100	0.00	0.25	0.01	0.03
10	10	100/100	0.00	1.93	0.11	0.30
10	12	94/100	0.00	12.95	0.84	1.93
10	15	84/100	0.00	43.89	5.71	9.80
20	10	100/100	0.00	4.72	0.08	0.47
20	15	97/100	0.02	18.12	1.15	2.53
20	20	93/100	0.13	95.03	10.44	19.14
20	25	79/100	1.09	253.68	41.98	60.35
20	30	63/100	3.84	247.03	59.06	63.81
40	20	100/100	0.06	89.02	2.04	8.93
40	30	98/100	0.99	156.16	22.03	33.17
40	40	80/100	7.23	598.32	128.47	154.92
40	50	45/100	19.14	585.42	198.81	146.39
40	60	19/100	50.26	577.1	319.25	183.10
60	30	99/100	0.64	222.79	14.36	33.21
60	45	90/100	8.76	590.03	123.05	148.48
60	60	51/100	37.63	593.06	252.34	168.92

All times are in seconds.