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:
| NGC number | Object type | Constellation | Right ascension ( J2000 ) | Declination ( J2000 ) |
| --- | --- | --- | --- | --- |
| 2014.0 | Association of stars | Dorado | 05h32m24s | °41′ |
| 2020.0 | Diffuse nebula | Dorado | 05h33m12s | °43′ |
| 2021.0 | Association of stars | Dorado | 05h33m30s | °27′ |
| 2022.0 | Planetary nebula | Orion | 05h42m06.2s | °05′11″ |
| 2023.0 | Diffuse nebula | Orion | 05h41m37.9s | °15′52″ |
| 2024.0 | Emission nebula | Orion | 05h41m43s | °51′ |
| 2025.0 | Open cluster | Mensa | 05h32m33s | °43′ |
| 2043.0 | Open cluster | Mensa | 05h35m56.7s | °04′23″ |
| 2068.0 | Diffuse nebula | Orion | 05h46m46.7s | °00′50″ |
| 2070.0 | Open cluster | Dorado | 05h38m42s | °06′ |
| 2080.0 | Open cluster | Dorado | 05h39m44s | °39′ |
| 2090.0 | Spiral galaxy | Columba | 05h47m02.3s | °15′05″ |
| 2099.0 | Open cluster | Auriga | 05h52m19s | °33′ |
| 2100.0 | Open cluster | Dorado | 05h42m09s | °12′43″ |
Question:
What is the average NGC number of everything with a Right ascension (J2000) of 05h33m30s?
Answer:
2021.0