HA - YAML - Apex chart with electricity spot price predictions

type: custom:apexcharts-card
apex_config:
  tooltip:
    x:
      format: dddd d. MMMM yyyy, kl. HH
  chart:
    height: 350px
    defaultLocale: da
    locales:
      - name: da
        options:
          months:
            - januar
            - februar
            - marts
            - april
            - maj
            - juni
            - juli
            - august
            - september
            - oktober
            - november
            - december
          shortMonths:
            - Jan
            - Feb
            - Mar
            - Apr
            - Maj
            - Jun
            - Jul
            - Aug
            - Sep
            - Okt
            - Nov
            - Dec
          days:
            - Søndag
            - Mandag
            - Tirsdag
            - Onsdag
            - Torsdag
            - Fredag
            - Lørdag
          shortDays:
            - SØN
            - MAN
            - TIR
            - ONS
            - TOR
            - FRE
            - LØR
all_series_config:
  unit: ' kr.'
experimental:
  color_threshold: true
header:
  title: Prognoser for elpriser excl. afgifter (kr/kWh)
  show: true
  standard_format: true
  show_states: false
  colorize_states: true
graph_span: 150h
span:
  start: day
  offset: +12h
yaxis:
  - min: 0
    apex_config:
      tickAmount: 5
series:
  - entity: sensor.elprognose
    name: Grønnere Elforbrug (DK1)
    type: line
    color: green
    stroke_width: 4
    float_precision: 2
    extend_to: false
    show:
      extremas: true
      legend_value: false
    data_generator: |
      var data = entity.attributes.prognose.map((start, index) => {
        return [new Date(start["date"]).getTime(), entity.attributes.prognose[index]["value"]/100];
      });
      return data;
  - entity: sensor.elpriser_excl_afgifter
    name: Nordpool spot (DK2)
    type: area
    stroke_width: 0
    color: grey
    float_precision: 2
    extend_to: false
    show:
      extremas: false
      legend_value: false
    data_generator: |
      var today = entity.attributes.raw_today.map((start, index) => {
        return [new Date(start["hour"]).getTime(), entity.attributes.raw_today[index]["price"]];
      });
      if (entity.attributes.tomorrow_valid) {
        var tomorrow = entity.attributes.raw_tomorrow.map((start, index) => {
          return [new Date(start["hour"]).getTime(), entity.attributes.raw_tomorrow[index]["price"]/1.25];
        });

        var data = today.concat(tomorrow);
      } else {
        var data = today
      }
      return data;