This crossword No. 12150 clues and answers were published on Sat 18 Apr 2009 and the puzzle can be visited by following The Guardian Quick Crossword No. 12150 link.
All Across Clues and Answers:
5-across – It brings stones from the sky : HAILSTORM
8-across – Genuine : TRUE
9-across – Pretend to be sick : MALINGER
10-across – Cage : AVIARY
11-across – Water down : DILUTE
13-across – Sort of bomb, number, or power : ATOMIC
15-across – Inn : TAVERN
16-across – One insistent on things being just so : STICKLER
18-across – Fermented honey drink : MEAD
19-across – Seaside walkway : PROMENADE
All Down Clues and Answers:
1-down – Tree bearing fruit with stones : DATEPALM
2-down – Lacking strength : FLIMSY
3-down – Phlegmatic : STOLID
4-down – Middle East country : IRAN
6-down – Be impelled : GRAVITATE
7-down – Song : YESTERDAY
12-down – Song — moved Leo : LOVEMEDO
14-down – Vertical division of page : COLUMN
15-down – Crowd : THRONG
17-down – Heart : CORE
This crossword has in total 20 where 10 are across and 10 are down.