如何在 excel 中编写公式

Question

I'm trying to write out a formula that finds the max value that is greater than 12pm and one formula that shows it as less than 12pm . I have one cell that shows 12:00:00PM in order to do the less or greater than. I have one column that shows timesteps and increment every 5 seconds (military time), and another column hat shows the data, this data column is where I need the max to be pulled from for AM time and PM time.

Cell A1= 12:00:00PM

Cell A10:A20000= Timestep starting at 0.0:00:00 and increments every 5 seconds so the next cell A11 would be 0.0:00:05 when it hits noon it would be 0.12:00:00. Remember military time so when it hits 1pm it would be 0.13:00:00.

Cell B10:B20000= data random numbers

Answer 1

For the maximum value in column B where the timestamp is before 12:00 use:

=MAXIFS(B:B,A:A,"<"&0.5)

For the maximum after 12:00, use:

=MAXIFS(B:B,A:A,">"&0.5)

You can use "<=" or ">=" to include 12:00, if needed

(note: 0.5 is 12:00, you can replace it with your cell if you want)