“Guardians of the Galaxy” continues to rule the box office universe. The cosmic Marvel adventure arrived in first place at the box office for a fourth weekend with $10.2 million, according to studio estimates Sunday. The domestic haul for “Guardians” now stands at $294.6 million after six weeks of release. Paramount’s live-action superhero reboot “Teenage Mutant Ninja Turtles” sliced off second place in its fifth weekend with $6.5 million. The Warner Bros. young-adult novel adaptation “If I Stay” starring Chloe Grace Moretz took third place in its third weekend with $5.7 million.