What are psalms from the 54th parallel?

I don't know what you mean by the 54th parallel but here is Psalms 54: (Psalm 54:superscription-7) To the director; to be accompanied with stringed instruments. Masʹkil. Of David, when the Ziphʹites came in and said to Saul: “David is hiding among us.” 54 O God, save me by your name, And defend me with your power.  2 O God, hear my prayer; Pay attention to the words of my mouth.  3 For strangers rise up against me, And ruthless men seek my life. They have no regard for God. (Selah)  4 Look! God is my helper; Jehovah is with those supporting me.  5 He will repay my foes with their own evil; In your faithfulness, put an end to them.  6 I will sacrifice to you willingly. I will praise your name, O Jehovah, for it is good.  7 For he saves me from every distress, And I will look in triumph on my enemies.