1. (365*24)*(1-0.99)=87.6 H
2.(365*24)*(1-0.999)=8.76 H
(365*24)*(1-0.9999)= 0.876 H

3. (1-(4/8760))*100) = 99.9543378995

4. 100%-99.8% =0.2%
100% - 99.2% = 0.8%

0.2% * 0.8% = 0.16%

(24*365)*0.0016= 14.016 H
100%-0.16%= 0.9984%

