( ( This study ) ( ( ( presents ( ( experimental results ) ( of ( ( the effects ) ( of ( these ( gases condensed ) ) ) ) ) ) ) ( on ( ( ( ( highly polished ) ( -LRB- ( superpolished -RRB- ) ) ) ( mirror surfaces ) ) ( cooled ( to ( ( temperatures ( ( as ( low ( as 15 ) ) ) K ) ) ( under ( vacuum conditions ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This) (NN study)) (VP (VBZ presents) (NP (NP (JJ experimental) (NNS results)) (PP (IN of) (NP (NP (DT the) (NNS effects)) (PP (IN of) (NP (DT these) (NNS gases) (NN condensed)))))) (PP (IN on) (NP (NP (ADJP (ADJP (RB highly) (JJ polished)) (PRN (-LRB- -LRB-) (ADJP (JJ superpolished)) (-RRB- -RRB-))) (NN mirror) (NNS surfaces)) (VP (VBN cooled) (S (VP (TO to) (VP (VB temperatures) (NP (QP (RB as) (JJ low) (IN as) (CD 15)) (NNP K)) (PP (IN under) (NP (NN vacuum) (NNS conditions)))))))))) (. .)))
This study presents experimental results of the effects  of these gases condensed on highly polished (superpolished) mirror surfaces cooled to temperatures as low as 15 K under vacuum conditions.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (DT the) (NN water)) (VP (VBP vapor) (PP (IN from) (NP (DT a) (JJ hot) (NN shower) (NNS contacts))) (NP (NP (DT the) (JJR cooler) (NN surface)) (PP (IN of) (NP (DT a) (NN mirror))))))) (, ,) (NP (DT the) (NN result)) (VP (VBZ is) (SBAR (IN that) (S (NP (NNP foggy)) (VP (VBP mirror))))) (. .)))