Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Value | Diameter | Thickness | Mass | Composition | Edge | Obverse | Reverse | first minting | issue | withdrawal | lapse |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 10 h | 15.5mm | 1.7mm | 0.6 g | 99% aluminium 1% magnesium | Plain | "ČESKÁ REPUBLIKA", Czech lion , year of minting | Value, stylized river | 1993.0 | 12 May 1993 | 31 October 2003 | 31 October 2009 |
| 20 h | 17mm | 1.7mm | 0.74 g | 99% aluminium 1% magnesium | Milled | "ČESKÁ REPUBLIKA", Czech lion , year of minting | Value, linden leaf | 1993.0 | 12 May 1993 | 31 October 2003 | 31 October 2009 |
| 50 h | 19mm | 1.7mm | 0.9 g | 99% aluminium 1% magnesium | Alternately plain and milled | "ČESKÁ REPUBLIKA", Czech lion , year of minting | Value | 1993.0 | 12 May 1993 | 31 August 2008 | 31 August 2014 |
| 1 Kč | 20mm | 1.85mm | 3.6 g | Nickel plated steel | Milled | "ČESKÁ REPUBLIKA", Czech lion , year of minting | Value, St. Wenceslas crown | 1993.0 | 9 June 1993 | Current | Current |
| 2 Kč | 21.5mm, 11-sided | 1.85mm | 3.7 g | Nickel plated steel | Rounded, plain | "ČESKÁ REPUBLIKA", Czech lion , year of minting | Value, a n Great Moravia button-jewel | 1993.0 | 9 June 1993 | Current | Current |
| 5 Kč | 23mm | 1.85mm | 4.8 g | Nickel plated steel | Plain | "ČESKÁ REPUBLIKA", Czech lion , year of minting | Value, Charles Bridge , Vltava , linden leaf | 1993.0 | 9 June 1993 | Current | Current |
Question:
How many coins have a diameter of 23mm?
Answer:
1.0