diff --git a/jeecg-module-data-analyze/src/main/java/org/jeecg/service/impl/SampleStatAnalysisService.java b/jeecg-module-data-analyze/src/main/java/org/jeecg/service/impl/SampleStatAnalysisService.java
index 3197642..a0ca737 100644
--- a/jeecg-module-data-analyze/src/main/java/org/jeecg/service/impl/SampleStatAnalysisService.java
+++ b/jeecg-module-data-analyze/src/main/java/org/jeecg/service/impl/SampleStatAnalysisService.java
@@ -610,11 +610,11 @@ public class SampleStatAnalysisService extends ServiceImpl<GardsSampleStatAnalys
                     double low = Math.max(conc - err, 0.01);
                     double high = conc + err;
 
-                    Map<String, Object> detectionPoint = new HashMap<>();
+                    Map<String, Object> detectionPoint = new LinkedHashMap<>();
                     detectionPoint.put("x", timeStr);
                     detectionPoint.put("y", conc);           // 中心值
-                    detectionPoint.put("low", low);          // 下限（可选，方便前端）
-                    detectionPoint.put("high", high);        // 上限（可选）
+                    detectionPoint.put("low", err);          // 下限（可选，方便前端）
+                    detectionPoint.put("high", err);        // 上限（可选）
 
                     // 或者用： value + error 结构（ECharts 某些系列支持）
                     //detectionPoint.put("value", new double[]{conc, low, high});