hollyfrontier corporation notes to consolidated financial statements continued .

Table:
 | ( in thousands )
2018 | $ 148716
2019 | 132547
2020 | 119639
2021 | 107400
2022 | 102884
thereafter | 857454
total | $ 1468640
transportation and storage costs incurred under these agreements totaled $ 140.5 million , $ 135.1 million and $ 137.7 million for the years ended december 31 , 2017 , 2016 and 2015 , respectively .
these amounts do not include contractual commitments under our long-term transportation agreements with hep , as all transactions with hep are eliminated in these consolidated financial statements .
we have a crude oil supply contract that requires the supplier to deliver a specified volume of crude oil or pay a shortfall fee for the difference in the actual barrels delivered to us less the specified barrels per the supply contract .
for the contract year ended august 31 , 2017 , the actual number of barrels delivered to us was substantially less than the specified barrels , and we recorded a reduction to cost of goods sold and accumulated a shortfall fee receivable of $ 26.0 million during this period .
in september 2017 , the supplier notified us they are disputing the shortfall fee owed and in october 2017 notified us of their demand for arbitration .
we offset the receivable with payments of invoices for deliveries of crude oil received subsequent to august 31 , 2017 , which is permitted under the supply contract .
we believe the disputes and claims made by the supplier are without merit .
in march , 2006 , a subsidiary of ours sold the assets of montana refining company under an asset purchase agreement ( 201capa 201d ) .
calumet montana refining llc , the current owner of the assets , has submitted requests for reimbursement of approximately $ 20.0 million pursuant to contractual indemnity provisions under the apa for various costs incurred , as well as additional claims related to environmental matters .
we have rejected most of the claims for payment , and this matter is scheduled for arbitration beginning in july 2018 .
we have accrued the costs we believe are owed pursuant to the apa , and we estimate that any reasonably possible losses beyond the amounts accrued are not material .
note 20 : segment information effective fourth quarter of 2017 , we revised our reportable segments to align with certain changes in how our chief operating decision maker manages and allocates resources to our business .
accordingly , our tulsa refineries 2019 lubricants operations , previously reported in the refining segment , are now combined with the operations of our petro-canada lubricants business ( acquired february 1 , 2017 ) and reported in the lubricants and specialty products segment .
our prior period segment information has been retrospectively adjusted to reflect our current segment presentation .
our operations are organized into three reportable segments , refining , lubricants and specialty products and hep .
our operations that are not included in the refining , lubricants and specialty products and hep segments are included in corporate and other .
intersegment transactions are eliminated in our consolidated financial statements and are included in eliminations .
corporate and other and eliminations are aggregated and presented under corporate , other and eliminations column .
the refining segment represents the operations of the el dorado , tulsa , navajo , cheyenne and woods cross refineries and hfc asphalt ( aggregated as a reportable segment ) .
refining activities involve the purchase and refining of crude oil and wholesale and branded marketing of refined products , such as gasoline , diesel fuel and jet fuel .
these petroleum products are primarily marketed in the mid-continent , southwest and rocky mountain regions of the united states .
hfc asphalt operates various asphalt terminals in arizona , new mexico and oklahoma. .

Question: what was the average storage costs from 2015 to 2017 in millions
Answer: 137.8
Calculation: add(140.5, 135.1), add(137.7, #0), divide(#1, const_3)