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 ) |
| --- | --- | --- | --- | --- |
| 6514.0 | Diffuse nebula | Sagittarius | 18h02m23s | °02′ |
| 6520.0 | Open cluster | Sagittarius | 18h03m | °53′ |
| 6522.0 | Globular cluster | Sagittarius | 18h03m34.1s | °02′02″ |
| 6523.0 | Open cluster | Sagittarius | 18h03m | °23′ |
| 6530.0 | Open cluster | Sagittarius | 18h05m | °22′ |
| 6531.0 | Open cluster | Sagittarius | 18h04m | °29′ |
| 6537.0 | Planetary nebula | Sagittarius | 18h05m13.1s | °50′35″ |
| 6543.0 | Planetary nebula | Draco | 17h58m33.4s | °38′00″ |
| 6559.0 | Diffuse nebula | Sagittarius | 18h10m | -24° |
| 6560.0 | Spiral galaxy | Hercules | 18h05m14.2s | °52′53″ |
| 6565.0 | Planetary nebula | Sagittarius | 18h11m52.5s | °10′42″ |
| 6575.0 | Elliptical galaxy | Hercules | 18h10m57.5s | °06′57″ |
| 6578.0 | Planetary nebula | Sagittarius | 18h16m16.5s | °27′03″ |
| 6589.0 | Diffuse nebula | Sagittarius | 18h16m50.4s | °53′24″ |
| 6590.0 | Diffuse nebula | Sagittarius | 18h17m00s | °53′ |
| 6600.0 | Galaxy | Hercules | 18h15m43.0s | °54′45″ |
Question:
Name the total number of NGC number for sagittarius and diffuse nebula with declination of °02′
Answer:
1.0