Does anyone know where the data came from that made this plot ? https://www.vice.com/en_us/article/a3xdae/more-people-pooping-in-san-francisco-than-ever-all-ti

Does anyone know where the data came from that made this plot ? https://www.vice.com/en_us/article/a3xdae/more-people-pooping-in-san-francisco-than-ever-all-time-high-vgtrn https://www.vice.com/en_us/article/a3xdae/more-people-poopin... I could not it in the pages or article ?