fix: values now accurate and no longer added up

src/index.js

@@ -93,11 +93,12 @@ async function getData(response) {
     throw new Error(errors.VENDOR_DOWN)
   }
 }
+
 function format(response) {
-  const data = response.resultatRetour.map(value => {
+  const data = response.resultatRetour.slice(1).map((value, index) => {
     return {
       time: moment(value.DateReleve, moment.ISO_8601).format('YYYY-MM-DD'),
-      load: value.ValeurIndex,
+      load: value.ValeurIndex - response.resultatRetour[index].ValeurIndex,
       type: value.TypeAgregat
     }
   })