EIA Natural Gas Storage Data
Total (09/15/17): 3,408 Bcf 
Total (09/08/17): 3,311 Bcf 
Net change: 97 Bcf 
Implied flow: 97 Bcf 
Year ago stocks: 3,544 Bcf
% change from year ago: -3.8 % 
5-year avg stocks: 3,341 Bcf
% change from 5-year avg: 2.0 %