Table:
text: Euro convergence criteria
Criteria
EU members which have not adopted the euro
Currency Code Entry_ERM_II Central_rate Official_target_date
Bulgarian lev BGN — 1.95583 —
Croatian kuna HRK — — —
Czech koruna CZK — — —
Danish krone DKK 1 January 1999 7.46038 Formal opt-out
Hungarian forint HUF — — —
Latvian lats LVL 2 May 2005 0.702804 1 January 2014
Lithuanian litas LTL 28 June 2004 3.45280 1 January 2015
Polish złoty PLN — — —
Romanian leu RON — — —
Swedish krona SEK Not considered — De facto opt-out
British pound sterling Gibraltar pound GBP GIP Not considered — Formal opt-out

Question: What type of currency has a SEK code under the euro convergence criteria?

Question: What code is used to represent the Croatian kuna currency under the euro convergence criteria?