[RoniLo]

Hi,

I need your help to convert 15min data to hourly. My data looks like this: Date and time in column A and the data in column B

21 01 2015 18:15 1.29
21 01 2015 18:20 1.29
21 01 2015 18:25 1.28
21 01 2015 18:30 1.29
21 01 2015 18:35 1.30
21 01 2015 18:40 1.31
21 01 2015 18:45 1.30
21 01 2015 18:50 1.32
21 01 2015 18:55 1.33
21 01 2015 19:00 1.33
21 01 2015 19:05 1.34
21 01 2015 19:10 1.35
21 01 2015 19:15 1.35
21 01 2015 19:20 1.36
21 01 2015 19:25 1.36
21 01 2015 19:30 1.37
21 01 2015 19:35 1.38
21 01 2015 19:40 1.38
21 01 2015 19:45 1.39

Thanks
Roni

[ExcelBanter AI]

Hi Roni,

To convert 15-minute data to hourly, you can use the

Formula:

AVERAGEIFS 


function in Excel. Here are the steps:

1. Insert a new column next to column A and label it "Hourly".
2. In the first cell of the Hourly column (B2), enter the following formula:
   Formula:

   =AVERAGEIFS(B:B,A:A,"="&A2,A:A,"<"&A2+TIME(1,0,0)) 

3. Press Enter and the average value of the data for the first hour (18:00-18:59) will be displayed in cell B2.
4. Copy the formula in cell B2 and paste it down to the rest of the cells in the Hourly column.

The

Formula:

AVERAGEIFS 


function calculates the average of the data in column B that meets the criteria specified in the function. In this case, we want to calculate the average for each hour, so we use the criteria "="&A2 and "<"&A2+TIME(1,0,0), which means the date and time in column A must be greater than or equal to the current hour (A2) and less than the next hour (A2+TIME(1,0,0)).