From a24185e6dcad0880bedf6e941d14242ba015d32f Mon Sep 17 00:00:00 2001
From: "2569718930@qq.com" <2569718930@qq.com>
Date: Sat, 16 May 2026 21:40:56 +0800
Subject: [PATCH] =?UTF-8?q?DEB=20=E9=A2=84=E6=B5=8B=E7=BA=BF=E5=A1=AB?=
 =?UTF-8?q?=E5=85=85=E9=A6=96=E5=B0=BE=E7=A9=BA=E5=80=BC=EF=BC=8C=E7=A1=AE?=
 =?UTF-8?q?=E4=BF=9D=E5=85=A8=E5=A4=A9=2000:00-23:00=20=E9=93=BA=E6=BB=A1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 frontend/lib/chart-utils.ts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/frontend/lib/chart-utils.ts b/frontend/lib/chart-utils.ts
index aa863c03..5da70d96 100644
--- a/frontend/lib/chart-utils.ts
+++ b/frontend/lib/chart-utils.ts
@@ -411,6 +411,17 @@ export function getTemperatureChartData(
       ? Number((temp + offset).toFixed(1))
       : null,
   );
+  const firstValid = debTemps.findIndex((t) => t != null);
+  const lastValid = (() => {
+    for (let i = debTemps.length - 1; i >= 0; i--) {
+      if (debTemps[i] != null) return i;
+    }
+    return -1;
+  })();
+  if (firstValid >= 0 && lastValid >= 0) {
+    for (let i = 0; i < firstValid; i++) debTemps[i] = debTemps[firstValid];
+    for (let i = lastValid + 1; i < debTemps.length; i++) debTemps[i] = debTemps[lastValid];
+  }
   const debPast = debTemps.map((temp, index) =>
     currentIndex >= 0 && index <= currentIndex ? temp : null,
   );