Fte Calculation For Process Has 15Mins Tat For Task.

I am need to calculate the  FTE for set process.

Below are the details for same .

Processing time of task = 3mins

Turn around time of task = 20mins

Hourly flow given below .

"07-08"

"08-09"

"09-10"

"10-11"

"11-12"

"12-13"

"13-14"

"14-15"

"15-16"

"16-17"

"17-18"

"18-19"

"19-20"

"20-21"

"21-22"

"22-23"

"23-24"

"00-01"

"01-02"

"02-03"

"03-04"

"04-05"

"05-06"

"06-07"

SD

8.495772

9.129153

9.434412

7.848178

18.48263

27.32546

31.66276

32.55438

24.10824

19.88294

18.89456

22.18037

19.64449

26.91599

35.84648

32.38131

24.03875

26.06141

32.34725

29.34812

25.14525

13.91955

7.324242

5.559699

Average Volume

15

18

14

12

21

31

40

44

43

35

35

46

54

59

49

40

29

30

39

31

25

19

11

11

How would I arrive at a FTE required for this team?