diff --git a/core/internal/server/handlers.go b/core/internal/server/handlers.go
index c69438a..be12fa5 100644
--- a/core/internal/server/handlers.go
+++ b/core/internal/server/handlers.go
@@ -291,7 +291,7 @@ func handleTSPage(c *gin.Context) {
 
 	// header + legend
 	b.WriteString("<div>时间窗: " + start.Format("2006-01-02 15:04:05") + " ~ " + end.Format("2006-01-02 15:04:05") + "</div>")
-	b.WriteString("<div style='margin:6px 0;color:#444;'>说明: n=样本总数; n11=命中(预报雨且实况雨); n01=漏报(预报不雨但实况雨); n10=空报(预报雨但实况不雨); n00=正确未报(预报与实况均不雨)。CSI=临界成功指数; POD=命中率; FAR=误报率。</div>")
+	b.WriteString("<div style='margin:6px 0;color:#444;'>说明：n 为样本数（频数）；n11 为预报降雨且实况降雨；n01 为预报不降雨但实况降雨（漏报）；n10 为预报降雨但实况不降雨（空报）；n00 为预报与实况均不降雨。CSI 为临界成功指数，POD 为命中率，FAR 为误报率。</div>")
 	b.WriteString("<table border='1' cellpadding='6' cellspacing='0'>")
 	b.WriteString("<tr><th>Provider</th><th>预报点</th><th>n</th><th>n11</th><th>n01</th><th>n10</th><th>n00</th><th>CSI</th><th>POD</th><th>FAR</th></tr>")