name | type | length | unit | ucd | description |

regionid | bigint | 8 | | | Unique Region ID |

convexid | bigint | 8 | | | Unique Convex ID |

patchid | int | 4 | | | Unique patch number |

type | varchar | 16 | | | CAMCOL, RUN, STAVE, TILE, TILEBOX, SKYBOX, WEDGE, SECTOR... |

radius | float | 8 | arcmin | | radius of bounding circle centered at ra, dec |

ra | float | 8 | deg | | right ascension of observation |

dec | float | 8 | deg | | declination of observation |

x | float | 8 | | | x of centerpoint Normal unit vector in J2000 |

y | float | 8 | | | y of centerpoint Normal unit vector in J2000 |

z | float | 8 | | | z of centerpoint Normal unit vector in J2000 |

c | float | 8 | | | offset of the equation of plane |

htmid | bigint | 8 | | | 20 deep Hierarchical Triangular Mesh ID of centerpoint |

area | float | 8 | deg^2 | | area of the patch |

convexString | varchar | -1 | | | {x,y,z,c}+ representation of the convex of the patch |