1 Lower and upper PMSD bounds were determined from the 10th and 90th percentile, respectively, of PMSD data from EPA's WET Interlaboratory Variability Study (USEPA, 2001a; USEPA, 2001b).
( ( ( ( 1 Lower ) and ) ( upper ( PMSD bounds ) ) ) ( ( were ( ( determined ( from ( ( ( ( ( the ( 10th ( and ( 90th percentile ) ) ) ) , ) respectively ) , ) ( of ( PMSD data ) ) ) ) ) ( from ( ( ( EPA 's ) ( WET ( Interlaboratory ( Variability Study ) ) ) ) ( -LRB- ( ( ( ( USEPA ( , 2001a ) ) ; ) ( ( USEPA , ) 2001b ) ) -RRB- ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (CD 1) (JJR Lower)) (CC and) (NP (JJ upper) (JJ PMSD) (NNS bounds))) (VP (VBD were) (VP (VBN determined) (PP (IN from) (NP (NP (NP (DT the) (JJ 10th) (CC and) (JJ 90th) (NN percentile)) (, ,) (ADVP (RB respectively)) (, ,)) (PP (IN of) (NP (JJ PMSD) (NNS data))))) (PP (IN from) (NP (NP (NP (NNP EPA) (POS 's)) (NNP WET) (NNP Interlaboratory) (NNP Variability) (NNP Study)) (PRN (-LRB- -LRB-) (NP (NNP USEPA) (, ,) (NNP 2001a)) (: ;) (NP (NP (NNP USEPA)) (, ,) (NP (NNS 2001b))) (-RRB- -RRB-)))))) (. .)))
The EPA's WET Interlaboratory Variability Study served as the reference for the upper and lower PMSD numbers.
( ( ( The ( EPA 's ) ) ( WET ( Interlaboratory ( Variability Study ) ) ) ) ( ( ( served ( as ( the reference ) ) ) ( for ( ( ( the upper ) and ) ( lower ( PMSD numbers ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNP EPA) (POS 's)) (NNP WET) (NNP Interlaboratory) (NNP Variability) (NNP Study)) (VP (VBD served) (PP (IN as) (NP (DT the) (NN reference))) (PP (IN for) (NP (NP (DT the) (JJ upper)) (CC and) (NP (JJR lower) (NN PMSD) (NNS numbers))))) (. .)))