Board of Governors of the Federal Reserve System

Seasonally adjusted

Sector	Annualized Change		2012=100						Percent change
	2018		2018						2018
	Q3	Q4	July	Aug.	Sept.	Oct.	Nov.	Dec.	July	Aug.	Sept.	Oct.	Nov.	Dec.
Total index
85th percentile	4.94	4.78	107.89	108.85	109.05	109.35	109.89	110.35	.42	.88	.23	.37	.68	.66
Current estimate	4.73	3.79	107.89	108.79	108.94	109.15	109.57	109.95	.42	.83	.13	.20	.38	.35
15th percentile	4.53	3.06	107.89	108.73	108.83	108.97	109.30	109.53	.42	.78	.04	.08	.14	.00
Manufacturing (SIC)
85th percentile	3.95	3.15	104.37	104.93	105.24	105.13	105.29	106.55	.37	.54	.33	-.05	.25	1.31
Current estimate	3.69	2.30	104.37	104.87	105.12	104.95	105.05	106.15	.37	.48	.24	-.16	.09	1.05
15th percentile	3.51	1.28	104.37	104.81	105.00	104.76	104.76	105.72	.37	.42	.13	-.28	-.06	.76
Mining
85th percentile	17.93	12.35	123.81	126.75	127.69	127.70	129.79	132.03	.83	2.38	.84	.31	2.01	2.45
Current estimate	17.36	9.20	123.81	126.59	127.32	127.09	128.54	130.49	.83	2.25	.57	-.18	1.14	1.52
15th percentile	16.76	6.03	123.81	126.43	126.90	126.37	127.22	128.76	.83	2.12	.27	-.57	.41	.63
Electric and gas utilities
85th percentile	-5.53	10.92	104.23	105.42	104.11	108.16	110.79	103.87	.16	1.14	-1.23	4.15	3.03	-4.50
Current estimate	-5.65	6.18	104.23	105.41	104.05	107.53	108.88	102.02	.16	1.13	-1.28	3.34	1.25	-6.30
15th percentile	-5.80	4.24	104.23	105.39	103.98	107.22	107.68	100.97	.16	1.11	-1.35	3.11	-.13	-8.07

The reliability measures show the likely range of values for the IP indexes after their fifth and final monthly revision. The 15th (85th) percentile estimate is equal to the current estimate plus an amount such that the equivalent measure revised by a lower (higher) amount for only 15 percent of the months since 2008. More information is available at https://www.federalreserve.gov/releases/g17/g17_technical_qa.htm#reliability.