This crossword No. 9190 clues and answers were published on Fri 15 Oct 1999 and the puzzle can be visited by following The Guardian Quick Crossword No. 9190 link.
All Across Clues and Answers:
1-across – Ursa Minor : LITTLEBEAR
7-across – Speak suddenly : EXCLAIM
8-across – Passage between seats : AISLE
10-across – Flat piece of ceramic : TILE
11-across – Severe pain : DISTRESS
13-across – Obelisk – indicator : NEEDLE
15-across – Exclamation from Archimedes : EUREKA
17-across – Break in performance : INTERVAL
18-across – Sell – whip : FLOG
21-across – Consumed : EATEN
22-across – Prickly plants : ACANTHI
23-across – Dissolved using heat : MELTEDDOWN
All Down Clues and Answers:
1-down – Neighbourhood – pub : LOCAL
2-down – Road vehicle running on tracks : TRAM
3-down – Translucent : LIMPID
4-down – Bragging : BOASTFUL
5-down – Harsh : AUSTERE
6-down – Person ready to take over : NEXTINLINE
9-down – Norfolk, Suffolk, part of Essex and Cambridgeshire : EASTANGLIA
12-down – Woodwind instrument : CLARINET
14-down – Qualify : ENTITLE
16-down – Danger : HAZARD
19-down – Dead language : LATIN
20-down – Aura round admired person : HALO
This crossword has in total 24 where 12 are across and 12 are down.