diff --git a/dashboard.py b/dashboard.py
index b5f47f6..3339dc5 100644
--- a/dashboard.py
+++ b/dashboard.py
@@ -395,7 +395,10 @@ class TimeSeries(Widget):
         if self.yscale == "log":
             try:
                 min_value = min(d[1] for d in self.lts.data if d[1] > 0)
-                self.extra["min"] = "%g" % min_value
+                if unit == "s":
+                    self.extra["min"] = "%g" % min_value  + " (" + self.format_time(min_value) + ")"
+                else:
+                    self.extra["min"] = "%g" % min_value
             except ValueError:
                 # no non-negative values
                 min_value = max_value / 2
@@ -409,8 +412,12 @@ class TimeSeries(Widget):
                 # Make sure min_value is less than max_value
                 min_value /= 2
             log.debug("min_value = %s, max_value = %s", min_value, max_value)
-        self.extra["max"] = "%g" % max_value
-        self.extra["last"] = "%g" % data[-1][1]
+        if unit == "s":
+            self.extra["max"] = "%g" % max_value + " (" + self.format_time(max_value) + ")"
+            self.extra["last"] = "%g" % data[-1][1] + " (" + self.format_time(data[-1][1]) + ")"
+        else:
+            self.extra["max"] = "%g" % max_value
+            self.extra["last"] = "%g" % data[-1][1]
         log.debug("collecting data")
         v_data = []
         for i in range(n):
@@ -464,6 +471,28 @@ class TimeSeries(Widget):
         log.debug("in as_html")
         return Markup(render_template("timeseries.html", widget=self))
 
+    def format_time(seconds):
+        unit = "s"
+        if value >= 365.25 * 86400:
+            value /= 365.25 * 86400
+            unit = "years"
+        elif value >= 86400:
+            value /= 86400
+            unit = "days"
+        elif value >= 3600:
+            value /= 3600
+            unit = "h"
+        elif value >= 60:
+            value /= 60
+            unit = "m"
+        elif value >= 1:
+            pass
+        elif value >= 0.001:
+            value *= 1000
+            unit = "ms"
+        return f"{value:.2f} {unit}"
+
+
 class Gauge(Widget):
     def __init__(self, d):
         super().__init__(d)
@@ -505,3 +534,4 @@ class Gauge(Widget):
         self.lastvalue_formatted = Markup(f"<span class='value'>{value:.2f}</span><span class='unit'>{unit}</unit>")
         return Markup(render_template("gauge.html", widget=self))
 
+# vim: sw=4