List of Roman domes

Columns: Diameter ⌀ | Name , Part | Location | Built
~ 30.00 | Baths of Trajan | Rome | ~ ? | ~ 22.00 | Baths of Diocletian , Two apse halls | Rome | ~ 300 | ~ 18.50 | Trajan 's Forum | Rome | ~ ? | ~ 15.80 | Santi Cosma e Damiano , Apse | Rome | ~ 6th c | ~ 11.00 | Nymphaeum | Jerash | ~ 2nd c | 1 ~ 9.60 | Basilica , Apse | Bostra | ~ 3rd c | 1 ~ 8.00 | Cathedral , Annex rooms | Bostra | ~ 6th c | 1 ~ 5.70 | Pantheon , Front niches | Rome | ~ 2nd c

Example questions:
What Roman half-dome has a diameter greater than 22 ? | In what part of the country is the Roman half-dome with a diameter just smaller than 15.80 located in ? | Who is the Roman thermae built before the year 301 named after ? | Who oversaw the construction of the Roman half-dome with a diameter between 22 and 15.80 ?

Answers:
thermae | northern | Baths of Diocletian | Apollodorus