POSITION	FIELD NAME	DESCRIPTION
1-4	NAICS	4-digit NAICS Code
5-8	cty_code	4-digit Country Code
9-10	state	2-digit State of Origin, using US Postal Service State Abbreviations. "XX" = Unidentified
11-14	year	4-digit Statistical Year
15-16	month	2-digit Statistical Month
17-31	gen_val_mo	15-digit General Imports, Total Value
32-46	con_val_mo	15-digit Imports for Consumption, Total Value
47-61	air_val_mo	15-digit Air Value
62-76	air_swt_mo	15-digit Air Shipping Weight
77-91	ves_val_mo	15-digit Vessel Value
92-106	ves_swt_mo	15-digit Vessel Shipping Weight
107-121	cnt_val_mo	15-digit Containerized Vessel Value
122-136	cnt_swt_mo	15-digit Containerized Vessel Shipping Weight
137-151	gen_val_yr	15-digit Year-to-Date General Imports, Total Value
152-166	con_val_yr	15-digit Year-to-Date Imports for Consumption, Total Value
167-181	air_val_yr	15-digit Year-to-Date Air Value
182-196	air_swt_yr	15-digit Year-to-Date Air Shipping Weight
197-211	ves_val_yr	15-digit Year-to-Date Vessel Value
212-226	ves_swt_yr	15-digit Year-to-Date Vessel Shipping Weight
227-241	cnt_val_yr	15-digit Year-to-Date Containerized Vessel Value
242-256	cnt_swt_yr	15-digit Year-to-Date Containerized Vessel Shipping Weight