diff --git a/app/Models/CollectorModel.php b/app/Models/CollectorModel.php
index 0a8eadd..cb00a74 100644
--- a/app/Models/CollectorModel.php
+++ b/app/Models/CollectorModel.php
@@ -44,7 +44,7 @@ class CollectorModel extends CommonModel
      * @param string $endDate      '2024-10-30'
      * @return mixed               해당 자리의 수치값
      */
-    public function get95PercentileValue(TrafficEntity $trafficEntity, string $field, string $startDate, string $endDate)
+    public function get95PercentileValue_OLD(TrafficEntity $trafficEntity, string $field, string $startDate, string $endDate)
     {
         // 1) 해당 조건의 전체 개수 구하기
         $total =
@@ -70,8 +70,22 @@ class CollectorModel extends CommonModel
         // 🔥 실행되기 전에 SQL 확인
         $sql = $builder->getCompiledSelect(false); //반드시 false해야 queryu reset 않함
         log_message('debug', '[95PERCENTILE QUERY] ' . $sql);
-
-        $row = $builder->get()->getRowArray();
+        $row = $builder->get()->getFirstRow('array');
         return $row[$field] ?? null;
     }
+
+    public function get95PercentileValue(TrafficEntity $trafficEntity, string $field, string $startDate, string $endDate)
+    {
+        $sql = "WITH ranked AS (
+    SELECT `{$field}`,`created_at`, ROW_NUMBER() OVER (ORDER BY `in` DESC) AS rn,COUNT(*) OVER () AS total
+    FROM {$this->table}
+    WHERE trafficinfo_uid = ?
+      AND created_at BETWEEN ? AND ?
+)
+SELECT `{$field}`
+FROM ranked
+WHERE rn = FLOOR(total * 0.05) + 1
+LIMIT 1";
+        return $this->query($sql, [$trafficEntity->getPK(), $startDate, $endDate])->getRowArray()[$field];
+    }
 }