tooltip: {
                        //                     
    pointFormatter: function () {
                            // console.log(this)
         let startTime = dateFormat(this.x);
         let endTime = dateFormat(this.x2)
         if (this.r) {
                    return `<b style="color:-sharp000;>${startTime}-${endTime}${this.yCategory}</b><br><b>${this.r}</b>`
          } else {
                  return `<b style="color:-sharp000;">${startTime}-${endTime}${this.yCategory}</b>`
          }
    }
}