table of contents item 2 .properties .the following table summarizes the facilities we lease as of december 31 , 2017 , including the location and size of each principal facility , and their designated use .we believe our facilities are adequate for our current and near-term needs , and will be able to locate additional facilities as needed .location approximate square feet operation expiration dates .
[['location', 'approximate square feet', 'operation', 'leaseexpiration dates'], ['san diego ca', '1218000', 'r&d manufacturing warehouse distribution and administrative', '2018 2013 2031'], ['san francisco bay area ca', '616000', 'r&d manufacturing warehouse and administrative', '2018 2013 2025'], ['singapore', '395000', 'r&d manufacturing warehouse distribution and administrative', '2018 2013 2025'], ['cambridge united kingdom*', '92000', 'r&d manufacturing and administrative', '2020 2013 2024'], ['eindhoven the netherlands', '42000', 'distribution and administrative', '2020'], ['madison wi*', '73000', 'r&d manufacturing warehouse distribution and administrative', '2018 2013 2019'], ['other*', '78000', 'administrative', '2018 2013 2022']]
________________ *excludes approximately 309000 square feet for which the leases do not commence until 2018 and beyond .item 3 .legal proceedings .we are involved in various lawsuits and claims arising in the ordinary course of business , including actions with respect to intellectual property , employment , and contractual matters .in connection with these matters , we assess , on a regular basis , the probability and range of possible loss based on the developments in these matters .a liability is recorded in the financial statements if it is believed to be probable that a loss has been incurred and the amount of the loss can be reasonably estimated .because litigation is inherently unpredictable and unfavorable results could occur , assessing contingencies is highly subjective and requires judgments about future events .we regularly review outstanding legal matters to determine the adequacy of the liabilities accrued and related disclosures .the amount of ultimate loss may differ from these estimates .each matter presents its own unique circumstances , and prior litigation does not necessarily provide a reliable basis on which to predict the outcome , or range of outcomes , in any individual proceeding .because of the uncertainties related to the occurrence , amount , and range of loss on any pending litigation or claim , we are currently unable to predict their ultimate outcome , and , with respect to any pending litigation or claim where no liability has been accrued , to make a meaningful estimate of the reasonably possible loss or range of loss that could result from an unfavorable outcome .in the event opposing litigants in outstanding litigations or claims ultimately succeed at trial and any subsequent appeals on their claims , any potential loss or charges in excess of any established accruals , individually or in the aggregate , could have a material adverse effect on our business , financial condition , results of operations , and/or cash flows in the period in which the unfavorable outcome occurs or becomes probable , and potentially in future periods .item 4 .mine safety disclosures .not applicable. .

Question: as of december 312017 what was the ratio of square footage in san francisco bay area ca singapore
Answer: 1.6
Explanation: as of december 312017 the ratio of square footage in san francisco bay area ca singapore was 1.6 to 1