A similar regression analysis was performed on mean monthly sales data (Figure 5) of Chelsea neighborhood vs the rest of Manhattan. An analysis of the pre-High Line mean price for Chelsea was $1,748,000 which was $220,000 higher than that of Manhattan at $1,528,000. The post-High Line price for Chelsea was $2,558,000 which was  $240,000 higher than that of Manhattan ($2,318,000). Although the latter change is not so much higher than the prior one, we do see that the value of the mean price in Chelsea has increased by $810,000 indicating that the number of luxury building sales increased in Chelsea neighborhood after High Line had been opened compared to the prior time. Also, the higher post-High Line mean prices for both Chelsea and Manhattan indicate a significant growth in luxury apartment sales.