I'm trying to retrieve a object from a queryset in django object and show it in my html graph by highcharts.

Models: 
class PbaSetOperator(models.Model):
    work_ymd = models.DateField(blank=True, null=True)
    line_nm = models.CharField(max_length=20, blank=True, null=True)
    prodc_qty = models.IntegerField(blank=True, null=True)
    work_mh = models.FloatField(blank=True, null=True)
    in_house = models.FloatField(blank=True, null=True)
    reduction = models.FloatField(blank=True, null=True)

views:

def setWorkerView(request):
    basic_st = 5.134
    set_operator = PbaSetOperator.objects.all()
    set_operator_today = set_operator.filter(work_ymd__range=(date,date1)).values('line_nm').order_by('line_nm').annotate(
                set_operator_today_value=((480 * (Sum('in_house') / Sum('work_mh'))) / ((1 - (Sum('reduction') /
                                                                                             (Sum('reduction') +
                                                                                              Sum('in_house')))) * basic_st)))
    
    context = {'set_operator_today':set_operator_today}
    
    return render(request, 'monitoring/setOperator.html', context)

html highcharts (pice of code):

{
    type: 'column',
    name: 'Today',
    data: [
    {% for instance in set_operator_day %}
           {{ instance.set_operator_today_value|floatformat:0 }},
    {% endfor %}
            ], color: 'blue'
},

The column graph is not appearing in the graph by highcrats, but I can see properly if I show it inside a table:

<tr>
{% for instance in set_operator_today %}
            <td>{{ instance.set_operator_today_value|floatformat:0 }}</td>           
{% endfor %}
</tr>

What is wrong?