Note 14 in the financial statements provides information on the calculations per share:Based on the information provided, what was diluted earnings per share for 2019? Using the information provided by the note, infer the reasons for the 6 million "consequence of potential ordinary shares on net income"

Reconciliation of the number of shares used to calculate earnings per share As of December 31 2019 2018 Weighted average number of: - Ordinary shares issued 428,634,035 428,634,035 - Treasury stock held regarding stock option plan (1,116,420) (1,116,420) - Other treasury stock (85,151) (85,151) Number of shares used to calculate basic 427,432,464 427,432,464 earnings per share OCEANE conversion 27,901,785 Number of ordinary and potential ordinary shares 455,334,249 427,432,464 used to calculate diluted earnings per share14. EARNINGS PER SHARE (in part) Results used for the calculation of diluted earnings per share: In E millions As of December 31 2019 2018 Basic net income for the period-Equity holders 273 395 of Air France-KLM Basic net income for the period for continuing 273 395 operations Consequence of potential ordinary shares on net 6 income (after tax) Net income for the period-(taken for calculation 279 395 of diluted earnings per share)