it's

(100-(0,1*number of failed requests low SLA+0,3*number of failed requests normal SLA+0,6*number of failed requests high SLA)*100/(0,1*number of success requests low SLA+0,3*number of success requests normal SLA+0,6*number of success requests high SLA)))/100

and it needed to be in section of sites, and another one in section of technicians

it would be like:

1. general report: qos is 0,96

2. site report:

site 1 - qos 0,96

site 2 - qos 0,98

site 3 - qos 0,94

3. techinicians report:

mike - qos 0,99

albert - qos 0,93