DataSrc:T241b

option = {

   title: {
   text: 'Stacked Area Chart'
 },
 tooltip: {
   trigger: 'axis',
   axisPointer: {
     type: 'cross',
     label: {
       backgroundColor: '#6a7985'
     }
   }
 },
 legend: {
   data: ['Student bachelor', 'Student master', 'Student doctorate']
 },
 toolbox: {
   feature: {
     saveAsImage: {}
   },
 dataset: {
   source: [
 [
   "entry_date",
   "Student bachelor",
   "Student master",
   "Student doctorate"
 ],

 [
   "2023-11-01",
   8, 1,
   1, 4,
   1
 ],

 [
   "2023-12-01",
   8,
   1,
   1
 ],

 [
   "2024-01-01",
   11,
   1,
   1
 ],

 [
   "2024-02-01",
   18,
   2, 1,
   2
 ],

 [
   "2024-03-01",
   5, 15,
   2, 1,
   3
 ],

 [
   "2024-04-01",
   15, 8,
   2, 3, 1,
   3
 ],

 [
   "2024-05-01",
   15, 20,
   5, 2, 1,
   2, 1
 ],

 [
   "2024-06-01",
   4, 12,
   6, 2,
   4
 ],

 [
   "2024-07-01",
   19, 1, 11,
   2, 3, 2,
   2, 4
 ],

 [
   "2024-08-01",
   7, 1,
   1, 2, 2,
   5
 ],

 [
   "2024-09-01",
   8,
   4, 2,
   1
 ],

 [
   "2024-10-01",
   12, 9,
   6, 4,
   
 ],

 [
   "2024-11-01",
   18, 9,
   5, 13,
   1, 1
 ]

]

 },
 xAxis: { type: 'category' },
 yAxis: { type: 'value' },
 series: [
   { type: 'line', stack: 'total', areaStyle: {} },
   { type: 'line', stack: 'total', areaStyle: {} },
   { type: 'line', stack: 'total', areaStyle: {} }
 ]

}