▁including ▁Roman es que ▁Rev ival , ▁Queen ▁Anne , ▁Second ▁Empire , ▁Col onial ▁Rev ival , ▁Class ical ▁Rev ival , ▁and ▁Italian ate . ▁ ▁It ▁also ▁includes ▁a ▁number ▁of ▁working ▁class ▁vern ac ular ▁dwell ings , ▁especially ▁in ▁the ▁Polish ▁Hill ▁section . ▁ ▁It ▁was ▁added ▁to ▁the ▁National ▁Register ▁of ▁Historic ▁Places ▁in ▁ 1 9 9 9 . ▁ ▁References ▁ ▁Category : H istor ic ▁districts ▁on ▁the ▁National ▁Register ▁of ▁Historic ▁Places ▁in ▁Pennsylvania ▁Category : Ital ian ate ▁architecture ▁in ▁Pennsylvania ▁Category : R oman es que ▁Rev ival ▁architecture ▁in ▁Pennsylvania ▁Category : Col onial ▁Rev ival ▁architecture ▁in ▁Pennsylvania ▁Category : Que en ▁Anne ▁architecture ▁in ▁Pennsylvania ▁Category : Build ings ▁and ▁structures ▁in ▁O il ▁City , ▁Pennsylvania ▁Category : National ▁Register ▁of ▁Historic ▁Places ▁in ▁Ven ango ▁County , ▁Pennsylvania <0x0A> </s> ▁Process ▁Window ▁Index ▁( P WI ) ▁is ▁a ▁statistical ▁measure ▁that ▁quant ifies ▁the ▁robust ness ▁of ▁a ▁manufact uring ▁process , ▁e . g . ▁one ▁which ▁involves ▁he ating ▁and ▁cool ing , ▁known ▁as ▁a ▁thermal ▁process . ▁In ▁manufact uring ▁industry , ▁P WI ▁values ▁are ▁used ▁to ▁cal ibr ate ▁the ▁he ating ▁and ▁cool ing ▁of ▁sol der ing ▁jobs ▁( known ▁as ▁a ▁thermal ▁profile ) ▁while ▁b aked ▁in ▁a ▁re flow ▁o ven . ▁ ▁P WI ▁measures ▁how ▁well ▁a ▁process ▁fits ▁into ▁a ▁user - defined ▁process ▁limit ▁known ▁as ▁the ▁specification ▁limit