Determining the Optimal Order Quantity with Compound Erlang Demand under (T,Q) Policy

Table 3

Average inventory cost C of varying lead time L for the electric power materials with compound Erlang distributed demand.

State grid code of materials	Average inventory cost C
	L=1	L=2	L=3	L=4	L=5	L=6	L=7	L=8	L=9	L=10
500012723	0.78	1.61	1.88	1.75	1.46	1.13	0.71	0.60	0.42	0.29
500012771	0.91	2.08	2.65	2.64	2.30	1.85	1.21	1.03	0.73	0.51
500012797	1.32	4.89	10.19	16.79	24.31	32.46	45.31	49.66	58.34	66.88
500012801	1.59	5.28	9.81	14.35	18.38	21.65	24.90	25.56	26.29	26.33
500014661	24.03	62.03	65.13	46.20	26.11	12.70	3.57	2.25	0.86	0.31
500014662	5.23	14.90	23.58	29.15	31.40	30.93	27.04	25.29	21.55	17.84
500014670	3.91	7.74	8.31	6.88	4.92	3.20	1.49	1.13	0.63	0.34
500014711	14.51	31.23	36.63	33.20	26.00	18.52	9.88	7.82	4.77	2.82
500014713	14.65	34.44	44.39	44.35	38.38	30.25	18.82	15.69	10.62	6.97
500016589	0.99	3.02	5.17	7.00	8.33	9.14	9.54	9.49	9.21	8.73
500016592	1.02	3.26	5.87	8.36	10.48	12.11	13.63	13.92	14.20	14.16
500017293	1.22	3.02	4.11	4.36	4.02	3.40	2.37	2.06	1.51	1.08
500017320	1.22	3.76	6.47	8.75	10.35	11.25	11.48	11.32	10.74	9.93
500017325	0.89	2.46	3.08	2.94	2.48	1.98	1.31	1.13	0.82	0.58
500020609	3.63	9.92	15.00	17.68	18.15	17.02	13.81	12.59	10.20	8.03
500020612	1.08	3.93	8.10	13.23	19.03	25.28	35.15	38.51	45.25	51.98
500021412	9.11	27.71	46.94	62.28	72.13	76.53	74.93	72.80	66.98	59.92
500021803	1.89	5.37	8.48	10.47	11.28	11.12	9.74	9.12	7.79	6.48
500021830	1.19	2.93	3.99	4.25	3.93	3.33	2.33	2.03	1.49	1.07
500021862	0.91	2.41	3.56	4.14	4.24	4.01	3.36	3.11	2.61	2.15
500021869	1.16	2.86	3.90	4.15	3.85	3.27	2.30	2.00	1.48	1.06
500022269	1.30	3.93	6.66	8.85	10.30	10.99	10.89	10.63	9.90	8.97
500022271	0.96	3.02	5.36	7.53	9.35	10.74	12.07	12.33	12.62	12.66
500027151	1.35	2.84	3.26	2.92	2.26	1.60	0.85	0.68	0.42	0.25
500027464	11.33	31.10	47.26	56.03	57.78	54.46	44.48	40.65	33.07	26.12
500029690	1.22	2.42	2.61	2.19	1.59	1.06	0.52	0.40	0.23	0.13
500032681	1.91	4.80	6.65	7.17	6.72	5.75	4.06	3.54	2.61	1.88
500032682	4.02	15.43	33.35	56.92	85.37	117.99	173.30	193.13	234.49	277.68
500032684	1.64	3.18	3.36	2.74	1.94	1.25	0.58	0.44	0.24	0.13
500032687	2.45	5.69	7.25	7.17	6.14	4.80	2.96	2.46	1.65	1.08
500035137	1.26	2.59	2.90	2.53	1.91	1.32	0.68	0.53	0.32	0.19
500051829	1.12	2.79	3.86	4.17	3.92	3.38	2.43	2.13	1.61	1.18
500053694	7.43	23.73	42.31	59.23	72.48	81.35	86.83	86.86	84.77	80.47
500058470	0.91	2.39	3.53	4.12	4.24	4.03	3.41	3.16	2.68	2.22
500061526	1.52	4.45	7.26	9.27	10.33	10.56	9.77	9.32	8.28	7.15
500061564	1.67	4.24	5.94	6.49	6.16	5.35	3.87	3.40	2.55	1.86
500061758	1.30	3.60	5.55	6.70	7.05	6.80	5.78	5.35	4.49	3.67
500062282	1.41	4.38	7.58	10.30	12.25	13.36	13.68	13.51	12.84	11.89
500063419	1.43	3.52	4.80	5.10	4.71	3.97	2.76	2.39	1.75	1.24
500064132	0.94	2.63	3.29	3.07	2.52	1.93	1.21	1.02	0.72	0.49
500065644	30.63	58.31	60.09	47.63	32.54	20.18	8.72	6.43	3.40	1.75
500065658	4.39	9.00	10.03	8.63	6.41	4.34	2.14	1.65	0.96	0.54
500066495	0.88	2.32	3.47	4.12	4.33	4.24	3.77	3.57	3.15	2.73
500067251	1.16	3.52	5.98	7.98	9.33	10.01	10.03	9.83	9.23	8.44
500067292	1.01	2.14	2.50	2.27	1.80	1.30	0.73	0.59	0.37	0.23
500067551	1.02	2.79	4.22	5.01	5.20	4.97	4.18	3.87	3.24	2.64
500067567	2.18	7.27	13.62	20.06	25.89	30.69	35.64	36.70	37.97	38.24
500067652	1.81	4.80	7.03	8.03	7.99	7.27	5.64	5.06	3.99	3.05
500067654	1.32	3.43	4.93	5.54	5.43	4.86	3.69	3.30	2.57	1.94