diff --git a/src/components/dense/saber/day_cycle_power_wave_plot.vue b/src/components/dense/saber/day_cycle_power_wave_plot.vue
index cd3067e..09d24e2 100644
--- a/src/components/dense/saber/day_cycle_power_wave_plot.vue
+++ b/src/components/dense/saber/day_cycle_power_wave_plot.vue
@@ -76,14 +76,14 @@ watch(() => selected.path, async () => {
     <div>
       <div flex="~ col items-stretch gap-3" py-3>
         <slot />
-        <Label>纬度带</Label>
+        <Label>纬度带（°）</Label>
         <Select v-model="selected.lat_range">
           <SelectTrigger>
             <SelectValue placeholder="选择纬度带" />
           </SelectTrigger>
           <SelectContent>
             <SelectGroup>
-              <SelectLabel>纬度带</SelectLabel>
+              <SelectLabel>纬度带（°）</SelectLabel>
               <SelectItem v-for="lat_range in lat_ranges" :key="lat_range" :value="lat_range">
                 {{ lat_range.replace(",", " ~ ") }}
               </SelectItem>
@@ -104,7 +104,7 @@ watch(() => selected.path, async () => {
             </SelectGroup>
           </SelectContent>
         </Select>
-        <Label for="day">天数</Label>
+        <Label for="day">日期</Label>
         <Select id="day" v-model="selected.day">
           <SelectTrigger>
             <SelectValue placeholder="选择日期" />
@@ -122,14 +122,14 @@ watch(() => selected.path, async () => {
             </SelectGroup>
           </SelectContent>
         </Select>
-        <Label for="age">经度范围</Label>
+        <Label for="age">经度范围（°）</Label>
         <Select v-model="selected.cycle_no">
           <SelectTrigger>
             <SelectValue placeholder="选择范围" />
           </SelectTrigger>
           <SelectContent>
             <SelectGroup>
-              <SelectLabel>经度范围</SelectLabel>
+              <SelectLabel>经度范围（°）</SelectLabel>
               <SelectItem v-for="i in 15" :key="i" :value="i.toString()">
                 {{ lon_ranges[i - 1] }}
               </SelectItem>
diff --git a/src/components/dense/saber/day_fft_ifft_plot.vue b/src/components/dense/saber/day_fft_ifft_plot.vue
index d3ef88c..8d7099b 100644
--- a/src/components/dense/saber/day_fft_ifft_plot.vue
+++ b/src/components/dense/saber/day_fft_ifft_plot.vue
@@ -76,14 +76,14 @@ watch(() => selected.path, async () => {
     <div>
       <div flex="~ col items-stretch gap-3" py-3>
         <slot />
-        <Label>纬度带</Label>
+        <Label>纬度带（°）</Label>
         <Select v-model:model-value="selected.lat_range">
           <SelectTrigger>
             <SelectValue placeholder="选择纬度带" />
           </SelectTrigger>
           <SelectContent>
             <SelectGroup>
-              <SelectLabel>纬度带</SelectLabel>
+              <SelectLabel>纬度带（°）</SelectLabel>
               <SelectItem v-for="lat_range in lat_ranges" :key="lat_range" :value="lat_range">
                 {{ lat_range.replace(",", " ~ ") }}
               </SelectItem>
@@ -104,7 +104,7 @@ watch(() => selected.path, async () => {
             </SelectGroup>
           </SelectContent>
         </Select>
-        <Label for="day">天数</Label>
+        <Label for="day">日期</Label>
         <Select id="day" v-model="selected.day">
           <SelectTrigger>
             <SelectValue placeholder="选择日期" />
@@ -122,14 +122,14 @@ watch(() => selected.path, async () => {
             </SelectGroup>
           </SelectContent>
         </Select>
-        <Label for="age">经度范围</Label>
+        <Label for="age">经度范围（°）</Label>
         <Select v-model="selected.cycle_no">
           <SelectTrigger>
             <SelectValue placeholder="选择范围" />
           </SelectTrigger>
           <SelectContent>
             <SelectGroup>
-              <SelectLabel>经度范围</SelectLabel>
+              <SelectLabel>经度范围（°）</SelectLabel>
               <SelectItem v-for="i in 15" :key="i" :value="i.toString()">
                 {{ lon_ranges[i - 1] }}
               </SelectItem>
diff --git a/src/components/dense/saber/month_year_power_wave_plot.vue b/src/components/dense/saber/month_year_power_wave_plot.vue
index 72eca97..e226845 100644
--- a/src/components/dense/saber/month_year_power_wave_plot.vue
+++ b/src/components/dense/saber/month_year_power_wave_plot.vue
@@ -90,14 +90,14 @@ onMounted(async () => {
             </SelectGroup>
           </SelectContent>
         </Select>
-        <Label>纬度带</Label>
+        <Label>纬度带（°）</Label>
         <Select v-model="selected.lat_range">
           <SelectTrigger>
             <SelectValue placeholder="选择纬度带" />
           </SelectTrigger>
           <SelectContent>
             <SelectGroup>
-              <SelectLabel>纬度带</SelectLabel>
+              <SelectLabel>纬度带（°）</SelectLabel>
               <SelectItem v-for="lat_range in lat_ranges" :key="lat_range" :value="lat_range">
                 {{ lat_range.replace(",", " ~ ") }}
               </SelectItem>
@@ -120,14 +120,14 @@ onMounted(async () => {
             </SelectGroup>
           </SelectContent>
         </Select>
-        <Label>纬度带</Label>
+        <Label>纬度带（°）</Label>
         <Select v-model="selected.lat_range">
           <SelectTrigger>
             <SelectValue placeholder="选择纬度带" />
           </SelectTrigger>
           <SelectContent>
             <SelectGroup>
-              <SelectLabel>纬度带</SelectLabel>
+              <SelectLabel>纬度带（°）</SelectLabel>
               <SelectItem v-for="lat_range in lat_ranges" :key="lat_range" :value="lat_range">
                 {{ lat_range.replace(",", " ~ ") }}
               </SelectItem>
diff --git a/src/components/dense/saber/plot_wave_fitting.vue b/src/components/dense/saber/plot_wave_fitting.vue
index 62d2985..8daca8f 100644
--- a/src/components/dense/saber/plot_wave_fitting.vue
+++ b/src/components/dense/saber/plot_wave_fitting.vue
@@ -72,14 +72,14 @@ function mapHeightValue(input: number) {
     <div>
       <div flex="~ col justify-stretch   gap-3" py-3>
         <slot />
-        <Label>纬度带</Label>
+        <Label>纬度带（°）</Label>
         <Select v-model="selected.lat_ranges">
           <SelectTrigger>
             <SelectValue placeholder="选择纬度带" />
           </SelectTrigger>
           <SelectContent>
             <SelectGroup>
-              <SelectLabel>纬度带</SelectLabel>
+              <SelectLabel>纬度带（°）</SelectLabel>
               <SelectItem v-for="lat_range in lat_ranges" :key="lat_range" :value="lat_range">
                 {{ lat_range.replace(",", " ~ ") }}
               </SelectItem>
@@ -100,7 +100,7 @@ function mapHeightValue(input: number) {
             </SelectGroup>
           </SelectContent>
         </Select>
-        <Label for="day">天数</Label>
+        <Label for="day">日期</Label>
         <Select id="day" v-model="selected.day">
           <SelectTrigger>
             <SelectValue placeholder="选择日期" />
diff --git a/src/pages/balloon/gravity_wave/1-year.vue b/src/pages/balloon/gravity_wave/1-year.vue
index 3a6e59d..7892a93 100644
--- a/src/pages/balloon/gravity_wave/1-year.vue
+++ b/src/pages/balloon/gravity_wave/1-year.vue
@@ -31,6 +31,19 @@ onMounted(async () => {
     allStations.value = stations
     selectedStation.value = stations[0]
   })
+
+  // set default start year and end year
+  const station = selectedStation.value
+  // filter out the data that belong to the selected station
+  const stationData = allPaths.value.filter(a => a.includes(station))
+  const stationYears = new Set(stationData.map((a) => {
+    const yearPattern = /-(\d{4})/
+    return Number.parseInt(a.match(yearPattern)?.[1] ?? '-1')
+  }).filter(a => a !== -1))
+  const minYear = Math.min(...Array.from(stationYears))
+  const maxYear = Math.max(...Array.from(stationYears))
+  startYear.value = minYear
+  endYear.value = maxYear
 })
 
 const currentMinBeginYear = computed(() => {
diff --git a/src/pages/cosmic/gravity_wave/0-perday.vue b/src/pages/cosmic/gravity_wave/0-perday.vue
index ea2ac9f..63848ef 100644
--- a/src/pages/cosmic/gravity_wave/0-perday.vue
+++ b/src/pages/cosmic/gravity_wave/0-perday.vue
@@ -125,14 +125,14 @@ const queryUrl = computed(() => {
         <Calendar v-model="value " initial-focus />
       </PopoverContent>
     </Popover>
-    <Label>纬度带</Label>
+    <Label>纬度带（°）</Label>
     <Select v-model="selected.lat_range">
       <SelectTrigger>
         <SelectValue placeholder="选择纬度带" />
       </SelectTrigger>
       <SelectContent>
         <SelectGroup>
-          <SelectLabel>纬度带</SelectLabel>
+          <SelectLabel>纬度带（°）</SelectLabel>
           <SelectItem v-for="lat_range in lat_ranges" :key="lat_range" :value="lat_range">
             {{ lat_range }}
           </SelectItem>
diff --git a/src/pages/cosmic/gravity_wave/1-multiday.vue b/src/pages/cosmic/gravity_wave/1-multiday.vue
index bb61a2d..8f4daf3 100644
--- a/src/pages/cosmic/gravity_wave/1-multiday.vue
+++ b/src/pages/cosmic/gravity_wave/1-multiday.vue
@@ -78,14 +78,14 @@ const queryUrl = computed(() => {
         </TabsTrigger>
       </TabsList>
     </Tabs>
-    <Label>纬度带</Label>
+    <Label>纬度带（°）</Label>
     <Select v-model="selected.lat_range">
       <SelectTrigger>
         <SelectValue placeholder="选择纬度带" />
       </SelectTrigger>
       <SelectContent>
         <SelectGroup>
-          <SelectLabel>纬度带</SelectLabel>
+          <SelectLabel>纬度带（°）</SelectLabel>
           <SelectItem v-for="lat_range in lat_ranges" :key="lat_range" :value="lat_range">
             {{ lat_range }}
           </SelectItem>
diff --git a/src/pages/cosmic/planet_wave/0-perday.vue b/src/pages/cosmic/planet_wave/0-perday.vue
index f800ae8..b66f995 100644
--- a/src/pages/cosmic/planet_wave/0-perday.vue
+++ b/src/pages/cosmic/planet_wave/0-perday.vue
@@ -124,14 +124,14 @@ const fetchUrl = computed(() => {
         <NumberFieldIncrement />
       </NumberFieldContent>
     </NumberField>
-    <Label>纬度带</Label>
+    <Label>纬度带（°）</Label>
     <Select v-model="selectedRange">
       <SelectTrigger>
         <SelectValue placeholder="选择纬度带" />
       </SelectTrigger>
       <SelectContent>
         <SelectGroup>
-          <SelectLabel>纬度带</SelectLabel>
+          <SelectLabel>纬度带（°）</SelectLabel>
           <SelectItem v-for="range in ranges" :key="range" :value="range">
             {{ range }}
           </SelectItem>
diff --git a/src/pages/cosmic/planet_wave/1-daily.vue b/src/pages/cosmic/planet_wave/1-daily.vue
index 31fa5c9..72f2e8b 100644
--- a/src/pages/cosmic/planet_wave/1-daily.vue
+++ b/src/pages/cosmic/planet_wave/1-daily.vue
@@ -74,14 +74,14 @@ const fetchUrl = computed(() => {
         <NumberFieldIncrement />
       </NumberFieldContent>
     </NumberField>
-    <Label>纬度带</Label>
+    <Label>纬度带（°）</Label>
     <Select v-model="selectedRange">
       <SelectTrigger>
         <SelectValue placeholder="选择纬度带" />
       </SelectTrigger>
       <SelectContent>
         <SelectGroup>
-          <SelectLabel>纬度带</SelectLabel>
+          <SelectLabel>纬度带（°）</SelectLabel>
           <SelectItem v-for="range in ranges" :key="range" :value="range">
             {{ range }}
           </SelectItem>
diff --git a/src/pages/saber/planet_wave/0-perday.vue b/src/pages/saber/planet_wave/0-perday.vue
index 3bd9fc0..601d672 100644
--- a/src/pages/saber/planet_wave/0-perday.vue
+++ b/src/pages/saber/planet_wave/0-perday.vue
@@ -138,14 +138,14 @@ const queryUrl = computed(() => {
         <NumberFieldIncrement />
       </NumberFieldContent>
     </NumberField>
-    <Label>纬度带</Label>
+    <Label>纬度带（°）</Label>
     <Select v-model="selected.range">
       <SelectTrigger>
         <SelectValue placeholder="选择纬度带" />
       </SelectTrigger>
       <SelectContent>
         <SelectGroup>
-          <SelectLabel>纬度带</SelectLabel>
+          <SelectLabel>纬度带（°）</SelectLabel>
           <SelectItem v-for="range in ranges" :key="range" :value="range">
             {{ range }}
           </SelectItem>
diff --git a/src/pages/saber/planet_wave/1-monthly.vue b/src/pages/saber/planet_wave/1-monthly.vue
index f01f73c..8dae60e 100644
--- a/src/pages/saber/planet_wave/1-monthly.vue
+++ b/src/pages/saber/planet_wave/1-monthly.vue
@@ -84,14 +84,14 @@ const queryUrl = computed(() => {
         <NumberFieldIncrement />
       </NumberFieldContent>
     </NumberField>
-    <Label>纬度带</Label>
+    <Label>纬度带（°）</Label>
     <Select v-model="selected.range">
       <SelectTrigger>
         <SelectValue placeholder="选择纬度带" />
       </SelectTrigger>
       <SelectContent>
         <SelectGroup>
-          <SelectLabel>纬度带</SelectLabel>
+          <SelectLabel>纬度带（°）</SelectLabel>
           <SelectItem v-for="range in ranges" :key="range" :value="range">
             {{ range }}
           </SelectItem>
diff --git a/src/pages/tidi/gravity_wave/monthly.vue b/src/pages/tidi/gravity_wave/monthly.vue
index 521636a..609cbd3 100644
--- a/src/pages/tidi/gravity_wave/monthly.vue
+++ b/src/pages/tidi/gravity_wave/monthly.vue
@@ -48,14 +48,14 @@ onMounted(async () => {
         </TabsTrigger>
       </TabsList>
     </Tabs>
-    <Label>纬度带</Label>
+    <Label>纬度带（°）</Label>
     <Select v-model="selected.lat_range">
       <SelectTrigger>
         <SelectValue placeholder="选择纬度带" />
       </SelectTrigger>
       <SelectContent>
         <SelectGroup>
-          <SelectLabel>纬度带</SelectLabel>
+          <SelectLabel>纬度带（°）</SelectLabel>
           <SelectItem
             v-for="lat_range in lat_ranges"
             :key="lat_range"