BQS OBSP Determination:
ETHYL TERT-BUTYL ETHER
METHOD: 4054 , TESTIDCODE: 50004GCM66
Open Data Set

 Analysis Date = 07/09/03 
 SpikeMix = Absolute 091701: 20 µl 
 Pct Recovery = 111%  Analysis Date = 06/07/03 
 SpikeMix = Absolute 091701: 20 µl 
 Pct Recovery = 120%  Analysis Date = 05/12/03 
 SpikeMix = Absolute 091701: 20 µl 
 Pct Recovery = 110%  Analysis Date = 08/06/02 
 SpikeMix = Absolute 091701: 20 µl 
 Pct Recovery = 119%  Analysis Date = 05/09/02 
 SpikeMix = Absolute 091701: 20 µl 
 Pct Recovery = 95%  Analysis Date = 02/22/02 
 SpikeMix = Absolute 091701: 20 µl 
 Pct Recovery = 103%  Analysis Date = 06/21/02 
 SpikeMix = Absolute 091701: 8 µl 
 Pct Recovery = 91%  Analysis Date = 03/16/02 
 SpikeMix = Absolute 091701: 8 µl 
 Pct Recovery = 114%  Analysis Date = 01/11/02 
 SpikeMix = Absolute 091701: 8 µl 
 Pct Recovery = 104%  Analysis Date = 11/15/00 
 SpikeMix = NSI 053100-01: 25 µl 
 Pct Recovery = 111%  Analysis Date = 08/16/00 
 SpikeMix = NSI 053100-01: 25 µl 
 Pct Recovery = 91%  Analysis Date = 07/08/03 
 Pct Recovery = 113%  Analysis Date = 07/03/03 
 Pct Recovery = 113%  Analysis Date = 07/03/03 
 Pct Recovery = 113%  Analysis Date = 06/28/03 
 Pct Recovery = 113%  Analysis Date = 06/28/03 
 Pct Recovery = 113%  Analysis Date = 06/23/03 
 Pct Recovery = 113%  Analysis Date = 06/23/03 
 Pct Recovery = 113%  Analysis Date = 06/17/03 
 Pct Recovery = 113%  Analysis Date = 06/17/03 
 Pct Recovery = 113%  Analysis Date = 06/12/03 
 Pct Recovery = 113%  Analysis Date = 06/12/03 
 Pct Recovery = 113%  Analysis Date = 06/07/03 
 Pct Recovery = 113%  Analysis Date = 06/07/03 
 Pct Recovery = 113%  Analysis Date = 06/02/03 
 Pct Recovery = 113%  Analysis Date = 06/02/03 
 Pct Recovery = 113%  Analysis Date = 05/27/03 
 Pct Recovery = 113%  Analysis Date = 05/27/03 
 Pct Recovery = 113%  Analysis Date = 05/22/03 
 Pct Recovery = 114%  Analysis Date = 05/22/03 
 Pct Recovery = 114%  Analysis Date = 05/17/03 
 Pct Recovery = 114%  Analysis Date = 05/17/03 
 Pct Recovery = 114%  Analysis Date = 05/11/03 
 Pct Recovery = 114%  Analysis Date = 05/11/03 
 Pct Recovery = 114%  Analysis Date = 05/06/03 
 Pct Recovery = 113%  Analysis Date = 05/06/03 
 Pct Recovery = 113%  Analysis Date = 05/01/03 
 Pct Recovery = 113%  Analysis Date = 05/01/03 
 Pct Recovery = 113%  Analysis Date = 04/26/03 
 Pct Recovery = 113%  Analysis Date = 04/26/03 
 Pct Recovery = 113%  Analysis Date = 04/20/03 
 Pct Recovery = 113%  Analysis Date = 04/20/03 
 Pct Recovery = 113%  Analysis Date = 04/15/03 
 Pct Recovery = 113%  Analysis Date = 04/15/03 
 Pct Recovery = 113%  Analysis Date = 04/10/03 
 Pct Recovery = 113%  Analysis Date = 04/10/03 
 Pct Recovery = 113%  Analysis Date = 04/04/03 
 Pct Recovery = 113%  Analysis Date = 04/04/03 
 Pct Recovery = 113%  Analysis Date = 03/30/03 
 Pct Recovery = 113%  Analysis Date = 03/30/03 
 Pct Recovery = 113%  Analysis Date = 03/25/03 
 Pct Recovery = 113%  Analysis Date = 03/25/03 
 Pct Recovery = 113%  Analysis Date = 03/20/03 
 Pct Recovery = 113%  Analysis Date = 03/20/03 
 Pct Recovery = 113%  Analysis Date = 03/14/03 
 Pct Recovery = 112%  Analysis Date = 03/14/03 
 Pct Recovery = 112%  Analysis Date = 03/09/03 
 Pct Recovery = 112%  Analysis Date = 03/09/03 
 Pct Recovery = 112%  Analysis Date = 03/04/03 
 Pct Recovery = 112%  Analysis Date = 03/04/03 
 Pct Recovery = 112%  Analysis Date = 02/26/03 
 Pct Recovery = 112%  Analysis Date = 02/26/03 
 Pct Recovery = 112%  Analysis Date = 02/21/03 
 Pct Recovery = 112%  Analysis Date = 02/21/03 
 Pct Recovery = 112%  Analysis Date = 02/16/03 
 Pct Recovery = 112%  Analysis Date = 02/16/03 
 Pct Recovery = 112%  Analysis Date = 02/11/03 
 Pct Recovery = 112%  Analysis Date = 02/11/03 
 Pct Recovery = 112%  Analysis Date = 02/05/03 
 Pct Recovery = 112%  Analysis Date = 02/05/03 
 Pct Recovery = 112%  Analysis Date = 01/31/03 
 Pct Recovery = 112%  Analysis Date = 01/31/03 
 Pct Recovery = 112%  Analysis Date = 01/26/03 
 Pct Recovery = 112%  Analysis Date = 01/26/03 
 Pct Recovery = 112%  Analysis Date = 01/20/03 
 Pct Recovery = 111%  Analysis Date = 01/20/03 
 Pct Recovery = 111%  Analysis Date = 01/15/03 
 Pct Recovery = 111%  Analysis Date = 01/15/03 
 Pct Recovery = 111%  Analysis Date = 01/10/03 
 Pct Recovery = 111%  Analysis Date = 01/10/03 
 Pct Recovery = 111%  Analysis Date = 01/05/03 
 Pct Recovery = 111%  Analysis Date = 01/05/03 
 Pct Recovery = 111%  Analysis Date = 12/30/02 
 Pct Recovery = 111%  Analysis Date = 12/30/02 
 Pct Recovery = 111%  Analysis Date = 12/25/02 
 Pct Recovery = 111%  Analysis Date = 12/25/02 
 Pct Recovery = 111%  Analysis Date = 12/20/02 
 Pct Recovery = 111%  Analysis Date = 12/20/02 
 Pct Recovery = 111%  Analysis Date = 12/14/02 
 Pct Recovery = 111%  Analysis Date = 12/14/02 
 Pct Recovery = 111%  Analysis Date = 12/09/02 
 Pct Recovery = 111%  Analysis Date = 12/09/02 
 Pct Recovery = 111%  Analysis Date = 12/04/02 
 Pct Recovery = 111%  Analysis Date = 12/04/02 
 Pct Recovery = 111%  Analysis Date = 11/29/02 
 Pct Recovery = 110%  Analysis Date = 11/29/02 
 Pct Recovery = 110%  Analysis Date = 11/23/02 
 Pct Recovery = 110%  Analysis Date = 11/23/02 
 Pct Recovery = 110%  Analysis Date = 11/18/02 
 Pct Recovery = 110%  Analysis Date = 11/18/02 
 Pct Recovery = 110%  Analysis Date = 11/13/02 
 Pct Recovery = 110%  Analysis Date = 11/13/02 
 Pct Recovery = 110%  Analysis Date = 11/07/02 
 Pct Recovery = 110%  Analysis Date = 11/07/02 
 Pct Recovery = 110%  Analysis Date = 11/02/02 
 Pct Recovery = 110%  Analysis Date = 11/02/02 
 Pct Recovery = 110%  Analysis Date = 10/28/02 
 Pct Recovery = 110%  Analysis Date = 10/28/02 
 Pct Recovery = 110%  Analysis Date = 10/23/02 
 Pct Recovery = 110%  Analysis Date = 10/23/02 
 Pct Recovery = 110%  Analysis Date = 10/17/02 
 Pct Recovery = 110%  Analysis Date = 10/17/02 
 Pct Recovery = 110%  Analysis Date = 10/12/02 
 Pct Recovery = 110%  Analysis Date = 10/12/02 
 Pct Recovery = 110%  Analysis Date = 10/07/02 
 Pct Recovery = 109%  Analysis Date = 10/07/02 
 Pct Recovery = 109%  Analysis Date = 10/02/02 
 Pct Recovery = 109%  Analysis Date = 10/02/02 
 Pct Recovery = 109%  Analysis Date = 09/26/02 
 Pct Recovery = 109%  Analysis Date = 09/26/02 
 Pct Recovery = 109%  Analysis Date = 09/21/02 
 Pct Recovery = 109%  Analysis Date = 09/21/02 
 Pct Recovery = 109%  Analysis Date = 09/16/02 
 Pct Recovery = 109%  Analysis Date = 09/16/02 
 Pct Recovery = 109%  Analysis Date = 09/10/02 
 Pct Recovery = 109%  Analysis Date = 09/10/02 
 Pct Recovery = 109%  Analysis Date = 09/05/02 
 Pct Recovery = 109%  Analysis Date = 09/05/02 
 Pct Recovery = 109%  Analysis Date = 08/31/02 
 Pct Recovery = 109%  Analysis Date = 08/31/02 
 Pct Recovery = 109%  Analysis Date = 08/26/02 
 Pct Recovery = 109%  Analysis Date = 08/26/02 
 Pct Recovery = 109%  Analysis Date = 08/20/02 
 Pct Recovery = 109%  Analysis Date = 08/20/02 
 Pct Recovery = 109%  Analysis Date = 08/15/02 
 Pct Recovery = 109%  Analysis Date = 08/15/02 
 Pct Recovery = 109%  Analysis Date = 08/10/02 
 Pct Recovery = 108%  Analysis Date = 08/10/02 
 Pct Recovery = 108%  Analysis Date = 08/04/02 
 Pct Recovery = 108%  Analysis Date = 08/04/02 
 Pct Recovery = 108%  Analysis Date = 07/30/02 
 Pct Recovery = 108%  Analysis Date = 07/30/02 
 Pct Recovery = 108%  Analysis Date = 07/25/02 
 Pct Recovery = 107%  Analysis Date = 07/25/02 
 Pct Recovery = 107%  Analysis Date = 07/20/02 
 Pct Recovery = 107%  Analysis Date = 07/20/02 
 Pct Recovery = 107%  Analysis Date = 07/14/02 
 Pct Recovery = 106%  Analysis Date = 07/14/02 
 Pct Recovery = 106%  Analysis Date = 07/09/02 
 Pct Recovery = 106%  Analysis Date = 07/09/02 
 Pct Recovery = 106%  Analysis Date = 07/04/02 
 Pct Recovery = 105%  Analysis Date = 07/04/02 
 Pct Recovery = 105%  Analysis Date = 06/28/02 
 Pct Recovery = 105%  Analysis Date = 06/28/02 
 Pct Recovery = 105%  Analysis Date = 06/23/02 
 Pct Recovery = 104%  Analysis Date = 06/23/02 
 Pct Recovery = 104%  Analysis Date = 06/18/02 
 Pct Recovery = 104%  Analysis Date = 06/18/02 
 Pct Recovery = 104%  Analysis Date = 06/13/02 
 Pct Recovery = 103%  Analysis Date = 06/13/02 
 Pct Recovery = 103%  Analysis Date = 06/07/02 
 Pct Recovery = 103%  Analysis Date = 06/07/02 
 Pct Recovery = 103%  Analysis Date = 06/02/02 
 Pct Recovery = 102%  Analysis Date = 06/02/02 
 Pct Recovery = 102%  Analysis Date = 05/28/02 
 Pct Recovery = 102%  Analysis Date = 05/28/02 
 Pct Recovery = 102%  Analysis Date = 05/22/02 
 Pct Recovery = 102%  Analysis Date = 05/22/02 
 Pct Recovery = 102%  Analysis Date = 05/17/02 
 Pct Recovery = 101%  Analysis Date = 05/17/02 
 Pct Recovery = 101%  Analysis Date = 05/12/02 
 Pct Recovery = 101%  Analysis Date = 05/12/02 
 Pct Recovery = 101%  Analysis Date = 05/07/02 
 Pct Recovery = 100%  Analysis Date = 05/07/02 
 Pct Recovery = 100%  Analysis Date = 05/01/02 
 Pct Recovery = 101%  Analysis Date = 05/01/02 
 Pct Recovery = 101%  Analysis Date = 04/26/02 
 Pct Recovery = 101%  Analysis Date = 04/26/02 
 Pct Recovery = 101%  Analysis Date = 04/21/02 
 Pct Recovery = 101%  Analysis Date = 04/21/02 
 Pct Recovery = 101%  Analysis Date = 04/15/02 
 Pct Recovery = 102%  Analysis Date = 04/15/02 
 Pct Recovery = 102%  Analysis Date = 04/10/02 
 Pct Recovery = 102%  Analysis Date = 04/10/02 
 Pct Recovery = 102%  Analysis Date = 04/05/02 
 Pct Recovery = 102%  Analysis Date = 04/05/02 
 Pct Recovery = 102%  Analysis Date = 03/31/02 
 Pct Recovery = 103%  Analysis Date = 03/31/02 
 Pct Recovery = 103%  Analysis Date = 03/25/02 
 Pct Recovery = 103%  Analysis Date = 03/25/02 
 Pct Recovery = 103%  Analysis Date = 03/20/02 
 Pct Recovery = 103%  Analysis Date = 03/20/02 
 Pct Recovery = 103%  Analysis Date = 03/15/02 
 Pct Recovery = 104%  Analysis Date = 03/15/02 
 Pct Recovery = 104%  Analysis Date = 03/09/02 
 Pct Recovery = 104%  Analysis Date = 03/09/02 
 Pct Recovery = 104%  Analysis Date = 03/04/02 
 Pct Recovery = 104%  Analysis Date = 03/04/02 
 Pct Recovery = 104%  Analysis Date = 02/27/02 
 Pct Recovery = 105%  Analysis Date = 02/27/02 
 Pct Recovery = 105%  Analysis Date = 02/22/02 
 Pct Recovery = 105%  Analysis Date = 02/22/02 
 Pct Recovery = 105%  Analysis Date = 02/16/02 
 Pct Recovery = 105%  Analysis Date = 02/16/02 
 Pct Recovery = 105%  Analysis Date = 02/11/02 
 Pct Recovery = 106%  Analysis Date = 02/11/02 
 Pct Recovery = 106%  Analysis Date = 02/06/02 
 Pct Recovery = 106%  Analysis Date = 02/06/02 
 Pct Recovery = 106%  Analysis Date = 01/31/02 
 Pct Recovery = 106%  Analysis Date = 01/31/02 
 Pct Recovery = 106%  Analysis Date = 01/26/02 
 Pct Recovery = 107%  Analysis Date = 01/26/02 
 Pct Recovery = 107%  Analysis Date = 01/21/02 
 Pct Recovery = 107%  Analysis Date = 01/21/02 
 Pct Recovery = 107%  Analysis Date = 01/16/02 
 Pct Recovery = 107%  Analysis Date = 01/16/02 
 Pct Recovery = 107%  Analysis Date = 01/10/02 
 Pct Recovery = 108%  Analysis Date = 01/10/02 
 Pct Recovery = 108%  Analysis Date = 01/05/02 
 Pct Recovery = 108%  Analysis Date = 01/05/02 
 Pct Recovery = 108%  Analysis Date = 12/31/01 
 Pct Recovery = 107%  Analysis Date = 12/31/01 
 Pct Recovery = 107%  Analysis Date = 12/26/01 
 Pct Recovery = 107%  Analysis Date = 12/26/01 
 Pct Recovery = 107%  Analysis Date = 12/20/01 
 Pct Recovery = 107%  Analysis Date = 12/20/01 
 Pct Recovery = 107%  Analysis Date = 12/15/01 
 Pct Recovery = 107%  Analysis Date = 12/15/01 
 Pct Recovery = 107%  Analysis Date = 12/10/01 
 Pct Recovery = 107%  Analysis Date = 12/10/01 
 Pct Recovery = 107%  Analysis Date = 12/04/01 
 Pct Recovery = 107%  Analysis Date = 12/04/01 
 Pct Recovery = 107%  Analysis Date = 11/29/01 
 Pct Recovery = 107%  Analysis Date = 11/29/01 
 Pct Recovery = 107%  Analysis Date = 11/24/01 
 Pct Recovery = 107%  Analysis Date = 11/24/01 
 Pct Recovery = 107%  Analysis Date = 11/19/01 
 Pct Recovery = 107%  Analysis Date = 11/19/01 
 Pct Recovery = 107%  Analysis Date = 11/13/01 
 Pct Recovery = 107%  Analysis Date = 11/13/01 
 Pct Recovery = 107%  Analysis Date = 11/08/01 
 Pct Recovery = 107%  Analysis Date = 11/08/01 
 Pct Recovery = 107%  Analysis Date = 11/03/01 
 Pct Recovery = 107%  Analysis Date = 11/03/01 
 Pct Recovery = 107%  Analysis Date = 10/28/01 
 Pct Recovery = 106%  Analysis Date = 10/28/01 
 Pct Recovery = 106%  Analysis Date = 10/23/01 
 Pct Recovery = 106%  Analysis Date = 10/23/01 
 Pct Recovery = 106%  Analysis Date = 10/18/01 
 Pct Recovery = 106%  Analysis Date = 10/18/01 
 Pct Recovery = 106%  Analysis Date = 10/13/01 
 Pct Recovery = 106%  Analysis Date = 10/13/01 
 Pct Recovery = 106%  Analysis Date = 10/07/01 
 Pct Recovery = 106%  Analysis Date = 10/07/01 
 Pct Recovery = 106%  Analysis Date = 10/02/01 
 Pct Recovery = 106%  Analysis Date = 10/02/01 
 Pct Recovery = 106%  Analysis Date = 09/27/01 
 Pct Recovery = 106%  Analysis Date = 09/27/01 
 Pct Recovery = 106%  Analysis Date = 09/21/01 
 Pct Recovery = 106%  Analysis Date = 09/21/01 
 Pct Recovery = 106%  Analysis Date = 09/16/01 
 Pct Recovery = 106%  Analysis Date = 09/16/01 
 Pct Recovery = 106%  Analysis Date = 09/11/01 
 Pct Recovery = 106%  Analysis Date = 09/11/01 
 Pct Recovery = 106%  Analysis Date = 09/06/01 
 Pct Recovery = 106%  Analysis Date = 09/06/01 
 Pct Recovery = 106%  Analysis Date = 08/31/01 
 Pct Recovery = 106%  Analysis Date = 08/31/01 
 Pct Recovery = 106%  Analysis Date = 08/26/01 
 Pct Recovery = 106%  Analysis Date = 08/26/01 
 Pct Recovery = 106%  Analysis Date = 08/21/01 
 Pct Recovery = 105%  Analysis Date = 08/21/01 
 Pct Recovery = 105%  Analysis Date = 08/15/01 
 Pct Recovery = 105%  Analysis Date = 08/15/01 
 Pct Recovery = 105%  Analysis Date = 08/10/01 
 Pct Recovery = 105%  Analysis Date = 08/10/01 
 Pct Recovery = 105%  Analysis Date = 08/05/01 
 Pct Recovery = 105%  Analysis Date = 08/05/01 
 Pct Recovery = 105%  Analysis Date = 07/31/01 
 Pct Recovery = 105%  Analysis Date = 07/31/01 
 Pct Recovery = 105%  Analysis Date = 07/25/01 
 Pct Recovery = 105%  Analysis Date = 07/25/01 
 Pct Recovery = 105%  Analysis Date = 07/20/01 
 Pct Recovery = 105%  Analysis Date = 07/20/01 
 Pct Recovery = 105%  Analysis Date = 07/15/01 
 Pct Recovery = 105%  Analysis Date = 07/15/01 
 Pct Recovery = 105%  Analysis Date = 07/09/01 
 Pct Recovery = 105%  Analysis Date = 07/09/01 
 Pct Recovery = 105%  Analysis Date = 07/04/01 
 Pct Recovery = 105%  Analysis Date = 07/04/01 
 Pct Recovery = 105%  Analysis Date = 06/29/01 
 Pct Recovery = 105%  Analysis Date = 06/29/01 
 Pct Recovery = 105%  Analysis Date = 06/24/01 
 Pct Recovery = 105%  Analysis Date = 06/24/01 
 Pct Recovery = 105%  Analysis Date = 06/18/01 
 Pct Recovery = 105%  Analysis Date = 06/18/01 
 Pct Recovery = 105%  Analysis Date = 06/13/01 
 Pct Recovery = 104%  Analysis Date = 06/13/01 
 Pct Recovery = 104%  Analysis Date = 06/08/01 
 Pct Recovery = 104%  Analysis Date = 06/08/01 
 Pct Recovery = 104%  Analysis Date = 06/02/01 
 Pct Recovery = 104%  Analysis Date = 06/02/01 
 Pct Recovery = 104%  Analysis Date = 05/28/01 
 Pct Recovery = 104%  Analysis Date = 05/28/01 
 Pct Recovery = 104%  Analysis Date = 05/23/01 
 Pct Recovery = 104%  Analysis Date = 05/23/01 
 Pct Recovery = 104%  Analysis Date = 05/18/01 
 Pct Recovery = 104%  Analysis Date = 05/18/01 
 Pct Recovery = 104%  Analysis Date = 05/12/01 
 Pct Recovery = 104%  Analysis Date = 05/12/01 
 Pct Recovery = 104%  Analysis Date = 05/07/01 
 Pct Recovery = 104%  Analysis Date = 05/07/01 
 Pct Recovery = 104%  Analysis Date = 05/02/01 
 Pct Recovery = 104%  Analysis Date = 05/02/01 
 Pct Recovery = 104%  Analysis Date = 04/26/01 
 Pct Recovery = 104%  Analysis Date = 04/26/01 
 Pct Recovery = 104%  Analysis Date = 04/21/01 
 Pct Recovery = 104%  Analysis Date = 04/21/01 
 Pct Recovery = 104%  Analysis Date = 04/16/01 
 Pct Recovery = 104%  Analysis Date = 04/16/01 
 Pct Recovery = 104%  Analysis Date = 04/11/01 
 Pct Recovery = 103%  Analysis Date = 04/11/01 
 Pct Recovery = 103%  Analysis Date = 04/05/01 
 Pct Recovery = 103%  Analysis Date = 04/05/01 
 Pct Recovery = 103%  Analysis Date = 03/31/01 
 Pct Recovery = 103%  Analysis Date = 03/31/01 
 Pct Recovery = 103%  Analysis Date = 03/26/01 
 Pct Recovery = 103%  Analysis Date = 03/26/01 
 Pct Recovery = 103%  Analysis Date = 03/21/01 
 Pct Recovery = 103%  Analysis Date = 03/21/01 
 Pct Recovery = 103%  Analysis Date = 03/15/01 
 Pct Recovery = 103%  Analysis Date = 03/15/01 
 Pct Recovery = 103%  Analysis Date = 03/10/01 
 Pct Recovery = 103%  Analysis Date = 03/10/01 
 Pct Recovery = 103%  Analysis Date = 03/05/01 
 Pct Recovery = 103%  Analysis Date = 03/05/01 
 Pct Recovery = 103%  Analysis Date = 02/27/01 
 Pct Recovery = 103%  Analysis Date = 02/27/01 
 Pct Recovery = 103%  Analysis Date = 02/22/01 
 Pct Recovery = 103%  Analysis Date = 02/22/01 
 Pct Recovery = 103%  Analysis Date = 02/17/01 
 Pct Recovery = 103%  Analysis Date = 02/17/01 
 Pct Recovery = 103%  Analysis Date = 02/12/01 
 Pct Recovery = 103%  Analysis Date = 02/12/01 
 Pct Recovery = 103%  Analysis Date = 02/06/01 
 Pct Recovery = 103%  Analysis Date = 02/06/01 
 Pct Recovery = 103%  Analysis Date = 02/01/01 
 Pct Recovery = 102%  Analysis Date = 02/01/01 
 Pct Recovery = 102%  Analysis Date = 01/27/01 
 Pct Recovery = 102%  Analysis Date = 01/27/01 
 Pct Recovery = 102%  Analysis Date = 01/21/01 
 Pct Recovery = 102%  Analysis Date = 01/21/01 
 Pct Recovery = 102%  Analysis Date = 01/16/01 
 Pct Recovery = 102%  Analysis Date = 01/16/01 
 Pct Recovery = 102%  Analysis Date = 01/11/01 
 Pct Recovery = 102%  Analysis Date = 01/11/01 
 Pct Recovery = 102%  Analysis Date = 01/06/01 
 Pct Recovery = 102%  Analysis Date = 01/06/01 
 Pct Recovery = 102%  Analysis Date = 12/31/00 
 Pct Recovery = 102%  Analysis Date = 12/31/00 
 Pct Recovery = 102%  Analysis Date = 12/26/00 
 Pct Recovery = 102%  Analysis Date = 12/26/00 
 Pct Recovery = 102%  Analysis Date = 12/21/00 
 Pct Recovery = 102%  Analysis Date = 12/21/00 
 Pct Recovery = 102%  Analysis Date = 12/15/00 
 Pct Recovery = 102%  Analysis Date = 12/15/00 
 Pct Recovery = 102%  Analysis Date = 12/10/00 
 Pct Recovery = 102%  Analysis Date = 12/10/00 
 Pct Recovery = 102%  Analysis Date = 12/05/00 
 Pct Recovery = 102%  Analysis Date = 12/05/00 
 Pct Recovery = 102%  Analysis Date = 11/30/00 
 Pct Recovery = 102%  Analysis Date = 11/30/00 
 Pct Recovery = 102%  Analysis Date = 11/24/00 
 Pct Recovery = 101%  Analysis Date = 11/24/00 
 Pct Recovery = 101%  Analysis Date = 11/19/00 
 Pct Recovery = 101%  Analysis Date = 11/19/00 
 Pct Recovery = 101%  Analysis Date = 11/14/00 
 Pct Recovery = 101%  Analysis Date = 11/14/00 
 Pct Recovery = 101%  Analysis Date = 11/08/00 
 Pct Recovery = 101%  Analysis Date = 11/08/00 
 Pct Recovery = 101%  Analysis Date = 11/03/00 
 Pct Recovery = 101%  Analysis Date = 11/03/00 
 Pct Recovery = 101%  Analysis Date = 10/29/00 
 Pct Recovery = 101%  Analysis Date = 10/29/00 
 Pct Recovery = 101%  Analysis Date = 10/24/00 
 Pct Recovery = 101%  Analysis Date = 10/24/00 
 Pct Recovery = 101%  Analysis Date = 10/18/00 
 Pct Recovery = 100%  Analysis Date = 10/18/00 
 Pct Recovery = 100%  Analysis Date = 10/13/00 
 Pct Recovery = 100%  Analysis Date = 10/13/00 
 Pct Recovery = 100%  Analysis Date = 10/08/00 
 Pct Recovery = 100%  Analysis Date = 10/08/00 
 Pct Recovery = 100%  Analysis Date = 10/02/00 
 Pct Recovery = 100%  Analysis Date = 10/02/00 
 Pct Recovery = 100%  Analysis Date = 09/27/00 
 Pct Recovery = 100%  Analysis Date = 09/27/00 
 Pct Recovery = 100%  Analysis Date = 09/22/00 
 Pct Recovery = 100%  Analysis Date = 09/22/00 
 Pct Recovery = 100%  Analysis Date = 09/17/00 
 Pct Recovery = 100%  Analysis Date = 09/17/00 
 Pct Recovery = 100%  Analysis Date = 09/11/00 
 Pct Recovery = 99%  Analysis Date = 09/11/00 
 Pct Recovery = 99%  Analysis Date = 09/06/00 
 Pct Recovery = 99%  Analysis Date = 09/06/00 
 Pct Recovery = 99%  Analysis Date = 09/01/00 
 Pct Recovery = 99%  Analysis Date = 09/01/00 
 Pct Recovery = 99%  Analysis Date = 08/26/00 
 Pct Recovery = 99%  Analysis Date = 08/26/00 
 Pct Recovery = 99%  Analysis Date = 08/21/00 
 Pct Recovery = 99%  Analysis Date = 08/21/00 
 Pct Recovery = 99%  Analysis Date = 08/16/00 
 Pct Recovery = 99%  Y = 1.5  Y = 0.5  Y = 1
The SGPlot Procedure

Plotted Points Statistics
ETHYL TERT-BUTYL ETHER

Spike Level N Mean Std-Dev. Median F_Pseudo
>= Reporting Level 11 106% 10% 110% 14%
Total 11 106% 10% 110% 14%

Sample Statistics
ETHYL TERT-BUTYL ETHER

Characteristic N % % Basis
Plotted 11 100% Spiked
Estimated Values 0 0% Spiked
Deleted Values 0 0% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 11 .  
False Negatives 0 0% 0 out of 11
Not Spiked 25 .  
False Positives 0 0% 0 out of 25