測試網頁限制:雨量站數小於 20 站,多邊形點數小於 300 點
limit of free version: rain station less than(<=) 20, and points of polygon less than(<=) 300
註:此案例呼叫 Web Service 計算徐昇加權因子包含傳遞資料將由多花費 0.2 秒
ps. When the Case call web service to comping thiessen weight will add 0.2 second to transfer data.