Question: Extract every second intersection point

Good Morning !

Does anyone know how i can extract every second intersection point ?

As shown in the picture in green

Versuch tragwerk.gh (26.1 KB)

Versuch Tragwerk.3dm (2.6 MB)

Thank you very much for your answer !
Kind regards
Milena

Versuch_tragwerk_re.gh (22.9 KB)

_ Like this?

Yes exactly
Thank you so much !