ρ	4 single-server queues	a single 4-server queue
0.75	4.00	1.51
0.76	4.17	1.55
0.77	4.35	1.59
0.78	4.55	1.64
0.79	4.76	1.69
0.80	5.00	1.75
0.81	5.26	1.81
0.82	5.56	1.88
0.83	5.88	1.96
0.84	6.25	2.05
0.85	6.67	2.15
0.86	7.14	2.27
0.87	7.69	2.40
0.88	8.33	2.56
0.89	9.09	2.74
0.90	10.00	2.97
0.91	11.11	3.24
0.92	12.50	3.59
0.93	14.29	4.03
0.94	16.67	4.63
0.95	20.00	5.46
0.96	25.00	6.70
0.97	33.33	8.79
0.98	50.00	12.95
0.99	100.00	25.45