Table:
text: 2008 Kentucky Derby
Post positions
Post positions
Finished Time_Behind Post Horse Jockey Trainer Owner_
15 31 ¾ 1 Cool Coal Man Julien Leparoux Nick Zito Robert V. LaPenta
4 11 2 Tale of Ekati Eibar Coa Barclay Tagg Charles E. Fipke
7 15 3 Anak Nakal Rafael Bejarano Nick Zito Four Roses Thoroughbreds LLC
13 24 ¼ 4 Court Vision Garrett Gomez William I. Mott IEAH Stables & WinStar Farm LLC
2 04 ¾ 5 Eight Belles Gabriel Saez Larry Jones Fox Hill Farms, Inc.
10 19 ½ 6 Z Fortune Robby Albarado Steve Asmussen Zayat Stables, LLC
18 48 ¾ 7 Big Truck Javier Castellano Barclay Tagg Eric Fein

text: 2008 Kentucky Derby
Post positions
Post positions
Finished Time_Behind Post Horse Jockey Trainer Owner_
12 22 ¾ 8 Visionaire Jose Lezcano Michael Matz Team Valor & Vision Racing LLC
8 15 9 Pyro Shaun Bridgmohan Steve Asmussen Winchell Thoroughbreds LLC
6 14 ¼ 10 Colonel John Corey Nakatani Eoin G. Harty WinStar Farm LLC
14 24 ½ 11 Z Humor Rene Douglas William I. Mott Zayat Stables, LLC
11 21 12 Smooth Air Manoel Cruz Bennie Stutts Jr. Mount Joy Stables, Inc.
16 32 13 Bob Black Jack Richard Migliore James Kasparoff Jeff Harmon & Tim Kasparoff
20 59 ¼ 14 Monba Ramon Dominguez Todd Pletcher Starlight, Lucarelli & Saylor
19 50 ¾ 15 Adriano Edgar Prado Graham Motion Courtlandt Farms

Question: What is the total number of posts for the 2008 Kentucky Derby if the coach is "Steve Asmussen" and the time/growth is 19 ½?