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|View History: Monthly Download Data (XLS File)                                 
|View History: Monthly                                                           
|View History: Monthly                                                           
|View History:                                                                   
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|Tennessee Natural Gas in Underground Storage (Working Gas)  (Million Cubic Feet)
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|Tennessee Natural Gas in Underground Storage (Working Gas)  (Million Cubic Feet)
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|Year                                                                                                                              | Jan   | Feb   | Mar   | Apr   | May   | Jun   | Jul   | Aug   | Sep   | Oct   | Nov   | Dec  
|--------------------------------------------------------------------------------------------------------------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | -----
|1997                                                                                                                              | 0     | 0     | 0     | 0     | 0     | 0     | 0     | 0     | 0     | 0     | 0     | 0    
|1998                                                                                                                              | 459   | 343   | 283   | 199   | 199   | 199   | 333   | 467   | 579   | 682   | 786   | 787  
|1999                                                                                                                              | 656   | 532   | 401   | 321   | 318   | 462   | 569   | 645   | 749   | 854   | 911   | 855  
|                                                                                                                                 
|2000                                                                                                                              | 691   | 515   | 452   | 389   | 371   | 371   | 371   | 371   | 371   | 420   | 534   | 619  
|2001                                                                                                                              | 623   | 563   | 490   | 421   | 525   | 638   | 669   | 732   | 778   | 840   | 598   | 597  
|2002                                                                                                                              | 647   | 648   | 650   | 650   | 625   | 622   | 609   | 605   | 602   | 600   | 512   | 512  
|2003                                                                                                                              | 404   | 294   | 226   | 179   | 214   | 290   | 365   | 460   | 463   | 508   | 508   | 447  
|2004                                                                                                                              | 344   | 293   | 281   | 312   | 345   | 391   | 454   | 509   | 514   | 539   | 527   | 486  
|                                                                                                                                 
|2005                                                                                                                              | 444   | 364   | 265   | 184   | 143   | 126   | 126   | 126   | 88    | 79    | 73    | 60   
|2006                                                                                                                              | 52    | 52    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44   
|2007                                                                                                                              | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44   
|2008                                                                                                                              | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44   
|2009                                                                                                                              | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44   
|                                                                                                                                 
|2010                                                                                                                              | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44   
|2011                                                                                                                              | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    | 44    |      
|2015                                                                                                                              | 666   | 570   | 580   | 627   | 680   | 729   | 789   | 848   | 913   | 1,005 | 1,107 | 1,162
|2016                                                                                                                              | 1,137 | 1,143 | 1,175 | 1,192 | 1,217 | 1,253 | 1,253 | 1,248 | 1,245 | 1,279 | 1,289 | 1,217
|2017                                                                                                                              | 1,185 | 1,172 | 1,176 | 1,206 | 1,238 | 1,238 | 1,271 | 1,260 | 1,303 | 1,334 | 1,329 | 1,261
|2018                                                                                                                              | 1,157 | 1,132 | 1,162 | 1,206 | 1,302 | 1,377 | 1,459 | 1,518 | 1,516 | 1,492 | 1,434 | 1,296
|2019                                                                                                                              | 1,215 | 1,209 | 1,185 | 1,222 | 1,302 | 1,346 | 1,396 | 1,491 | 1,491 | 1,491 | 1,482 | 1,469
|                                                                                                                                 
|2020                                                                                                                              | 1,245 | 1,173 | 1,145 | 1,145 | 1,187 | 1,218 | 1,253 | 1,322 | 1,322 | 1,372 | 1,370 | 1,347
|2021                                                                                                                              | 1,324 | 1,226 | 1,233 | 1,234 | 1,290 | 1,342 | 1,342 | 1,342 | 1,342 | 1,342 | 1,328 | 1,294
|2022                                                                                                                              | 1,179 | 1,117 | 1,073 | 1,047 | 1,047 | 1,098 | 1,156 | 1,205 | 1,251 | 1,300 | 1,248 | 1,096
|2023                                                                                                                              | 1,096 | 1,049 | 1,003 | 1,023 | 1,109 | 1,203 | 1,299 | 1,475 | 1,400 | 1,400 | 1,396 | 1,420
|2024                                                                                                                              | 1,385 | 1,376 | 1,376 | 1,422 | 1,495 |       |       |       |       |       |       |      
|                                                                                                                                 
|- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
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|Release Date: 7/31/2024                                                                                                          
|Next Release Date: 8/30/2024