Superscore- which tests to send?

Hi, so all the schools I am applying to accept superscores. So many question is should I send both test dates? The first time I took the ACT my Science was 1 point higher than the second, but everything else lower. Should I send it as it doesn’t change my overall score? The schools I am looking at are super selective, and I am applying to major in chem

My scores-
April overall 31
math 29
english 31
reading 32
science 32
writing 7

June- 33
math 31
english 35
reading 34
science 31
writing 10

Only send the 33. ACT science isn’t exactly science. The first score is not one to send to selective schools.
Hardly any schools SS the ACT (especially super selective ones), but all your schools do?