In F13, I have this --> =IF(ISBLANK(E13),"",IF(SUM(E13-D13)>=0,ROUNDUP(SUM(E13-D13)/2,0)+D13,ROUNDDOWN(SUM(E13-D13)/2,0)+D13))
In K13 I have this --> =IF(ISBLANK(E13),"0",MEDIAN(4,-4,E13-D13))
Lastly in N13 I have this --> =IF(AND(ISBLANK(E13),ISBLANK(E14)),"",K13+L13+M13+K14+L14+M14)
My...