The following table contains contribution and distribution data representing the Partnership's portion based on the Partnership's ownership percentage of each investment: | | | | | | | | | | | | | | | | | | Three Months Ended
September 30, | | Nine Months Ended
September 30, | (in millions) | 2016 | | 2015 | | 2016 | | 2015 | Millennium Pipeline | | | | | | | | Contributions to Millennium Pipeline | $ | 4.3 |
| | $ | 1.4 |
| | $ | 6.2 |
| | $ | 1.4 |
| Distributions of earnings from Millennium Pipeline | 17.5 |
| | 13.3 |
| | 41.3 |
| | 37.5 |
| Hardy Storage | | | | | | | | Contributions to Hardy Storage | — |
| | — |
| | — |
| | — |
| Distributions of earnings from Hardy Storage | — |
| | — |
| | 1.4 |
| | 1.0 |
| Pennant | | | | | | | | Contributions to Pennant | — |
| | — |
| | — |
| | — |
| Distributions of earnings from Pennant | 2.3 |
| | 2.9 |
| | 8.3 |
| | 5.6 |
| Return of capital from Pennant | 0.8 |
| | 0.2 |
| | 1.6 |
| | 2.4 |
|
|