Min, max, question

[steve400243]

Hello, I use this formula to get the actual charge (AF19), Min Charge (AG19), Or max charge (AH19) by days of the month. Question is how do I keep the cell for say the June 2nd total blank without the min charge populating if the data is not filled in yet in the other cells to get the total? hope that makes sense.

=MAX(MIN(AF19,AH19),AG19)

 

[footoo]

=if(counta(af16:ah19)<>3,"",max(min(af19,ah19),ag19))