test agin old sum_pw in Poisson
test agin old sum_pw in Poisson

dithillobothrium/SIRIUS,dithillobothrium/SIRIUS,electronic-structure/sirius,toxa81/sirius,toxa81/sirius,dithillobothrium/SIRIUS,toxa81/sirius,electronic-structure/sirius,dithillobothrium/SIRIUS,electronic-structure/sirius,toxa81/sirius,electronic-structure/sirius,electronic-structure/sirius,electronic-structure/sirius,toxa81/sirius,electronic-structure/sirius,toxa81/sirius