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|View History: Monthly Download Data (XLS File)                                                                 
|View History: Monthly                                                                                           
|View History: Monthly                                                                                           
|View History:                                                                                                   
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|Pennsylvania Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Percent)
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|Pennsylvania Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Percent)
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|Year                                                                                                                              | Jan   | Feb   | Mar   | Apr   | May   | Jun   | Jul   | Aug   | Sep   | Oct   | Nov   | Dec  
|--------------------------------------------------------------------------------------------------------------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | -----
|1991                                                                                                                              | 18.8  | 22.4  | 37.0  | 33.4  | 9.7   | -8.5  | -17.7 | -19.9 | -17.0 | -13.4 | -15.2 | -11.2
|1992                                                                                                                              | 3.5   | -5.5  | -31.8 | -29.7 | -19.1 | -4.4  | 1.5   | 3.8   | 2.9   | 5.0   | 9.1   | 6.0  
|1993                                                                                                                              | 8.3   | -16.5 | -29.1 | -13.2 | -5.0  | -0.1  | 5.0   | 3.1   | 4.8   | 0.9   | -1.5  | -3.3 
|1994                                                                                                                              | -21.0 | -19.2 | 13.5  | 27.9  | 24.0  | 18.3  | 16.9  | 15.8  | 5.8   | 6.1   | 2.3   | 5.6  
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|1995                                                                                                                              | 35.1  | 43.1  | 48.4  | 8.5   | 1.3   | -0.3  | -7.1  | -8.1  | -0.4  | 0.3   | -7.1  | -19.6
|1996                                                                                                                              | -32.3 | -32.6 | -49.9 | -39.0 | -28.4 | -18.3 | -0.5  | 4.4   | 0.7   | -0.2  | 3.9   | 26.8 
|1997                                                                                                                              | 31.1  | 63.7  | 89.6  | 41.7  | 24.2  | 9.7   | -4.5  | -6.2  | -2.2  | -2.4  | -0.3  | -8.7 
|1998                                                                                                                              | 5.7   | 9.8   | 22.4  | 52.3  | 49.3  | 32.7  | 23.0  | 11.1  | 3.1   | 4.1   | 12.5  | 17.6 
|1999                                                                                                                              | 6.7   | 4.2   | 0.9   | -4.2  | -8.9  | -9.4  | -9.9  | -3.5  | 0.8   | 0.5   | -0.8  | -9.3 
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|2000                                                                                                                              | -22.7 | -35.8 | -22.7 | -31.3 | -20.8 | -14.5 | -4.8  | -6.0  | -3.5  | -1.2  | -6.1  | -16.8
|2001                                                                                                                              | -3.8  | 7.9   | -27.9 | 6.2   | 12.3  | 16.7  | 13.6  | 10.0  | 6.1   | 5.7   | 15.2  | 40.8 
|2002                                                                                                                              | 61.4  | 78.3  | 128.9 | 63.1  | 27.1  | 17.0  | 6.9   | 6.0   | 4.7   | -2.8  | -7.7  | -16.6
|2003                                                                                                                              | -41.0 | -58.7 | -52.6 | -48.7 | -27.8 | -18.6 | -13.7 | -8.6  | -3.9  | 3.5   | 5.3   | 14.9 
|2004                                                                                                                              | 26.5  | 53.4  | 45.5  | 46.5  | 15.6  | 8.5   | 11.7  | 10.2  | 4.7   | 2.0   | 1.7   | -2.7 
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|2005                                                                                                                              | 7.8   | 19.7  | -3.1  | 7.1   | 9.5   | 3.7   | -1.9  | -4.3  | -4.0  | -2.1  | 0.2   | 1.3  
|2006                                                                                                                              | 32.0  | 37.0  | 69.3  | 50.6  | 29.0  | 21.8  | 10.4  | 9.8   | 7.4   | -2.0  | -0.7  | 10.2 
|2007                                                                                                                              | -3.6  | -23.2 | -26.4 | -33.9 | -19.6 | -13.7 | -3.7  | -4.0  | -3.6  | 4.3   | -1.5  | -11.5
|2008                                                                                                                              | -17.5 | -7.3  | -16.9 | -3.6  | -12.3 | -14.8 | -12.1 | -1.0  | -1.8  | -3.1  | -4.3  | -2.6 
|2009                                                                                                                              | -15.7 | -8.4  | 5.7   | 9.3   | 17.4  | 23.1  | 18.7  | 8.4   | 7.1   | 4.8   | 10.2  | 8.3  
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|2010                                                                                                                              | 22.8  | 18.3  | 34.6  | 29.2  | 9.5   | -1.3  | -5.6  | -6.4  | -5.3  | -0.5  | -2.6  | -8.2 
|2011                                                                                                                              | -11.1 | -11.2 | -23.2 | -22.8 | -18.3 | -13.4 | -11.2 | -8.5  | -3.3  | -2.0  | 1.5   | 18.0 
|2012                                                                                                                              | 35.9  | 61.7  | 96.5  | 72.5  | 49.9  | 36.5  | 22.5  | 13.1  | 4.0   | 1.6   | -6.5  | -3.3 
|2013                                                                                                                              | -3.3  | -14.5 | -38.0 | -34.9 | -25.6 | -17.4 | -11.7 | -10.1 | -5.6  | -6.2  | -5.0  | -15.3
|2014                                                                                                                              | -30.3 | -47.9 | -58.5 | -48.7 | -31.3 | -22.2 | -14.8 | -6.5  | -2.1  | 3.5   | 4.6   | 14.3 
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|2015                                                                                                                              | 27.5  | 45.4  | 75.4  | 55.4  | 32.0  | 21.3  | 11.0  | 6.2   | 2.0   | -0.4  | 5.6   | 11.4 
|2016                                                                                                                              | 13.6  | 40.0  | 86.8  | 54.9  | 23.1  | 12.5  | 11.5  | 4.9   | 5.7   | 1.4   | -2.9  | -18.4
|2017                                                                                                                              | -22.3 | -24.8 | -53.4 | -39.4 | -27.1 | -19.9 | -13.5 | -3.9  | -6.2  | -2.1  | -4.8  | -3.2 
|2018                                                                                                                              | -7.7  | -9.8  | -6.4  | -30.7 | -22.7 | -18.3 | -14.6 | -18.5 | -10.7 | -10.0 | -12.2 | -6.2 
|2019                                                                                                                              | -4.0  | -12.9 | -0.5  | 36.9  | 28.3  | 25.2  | 13.6  | 18.2  | 15.6  | 15.3  | 20.5  | 20.8 
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|2020                                                                                                                              | 37.4  | 56.7  | 98.6  | 52.6  | 39.0  | 23.8  | 18.5  | 10.0  | 2.9   | -0.7  | 2.1   | -2.4 
|2021                                                                                                                              | -10.8 | -21.9 | -23.7 | -19.8 | -24.5 | -25.6 | -20.9 | -20.1 | -13.7 | -5.1  | -11.2 | -2.3 
|2022                                                                                                                              | -15.2 | -18.5 | -24.3 | -25.8 | -12.9 | -3.6  | -4.5  | -2.2  | 1.2   | -1.8  | 6.0   | -4.5 
|2023                                                                                                                              | 21.6  | 48.1  | 55.1  | 76.4  | 59.0  | 41.6  | 29.7  | 21.7  | 7.3   | 5.4   | 0.6   | 12.6 
|2024                                                                                                                              | 1.5   | -4.0  | 6.6   | 3.3   | -0.5  |       |       |       |       |       |       |      
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|- = 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