Peak call times/hours

[Ber]

On a spreadsheet of calls as example below made from different extension
numbers, what I am trying to determine is how many ext Nos ( Maximum) are on
a call together i.e. at the same time say between 9 and 10 o clock then 10
and 11 then 11 and 12 etc etc on any particular date can anyone help please
we are trying to work out peak usage hours. This is a huge spreadsheet over
months with all calls made recorded and we just want to know our peak usgae
hours over the months. Hope I've made this clear and thanks in advance.
Ext NO Date (dd/MM/yyyy) Time Duration
3224 01/11/2007 08:47 0:00:28
3336 01/11/2007 09:25 0:00:34
3219 01/11/2007 09:51 0:00:33
3278 01/11/2007 10:07 0:00:25
3016 01/11/2007 10:19 0:00:50
3161 01/11/2007 10:32 0:00:00
3161 01/11/2007 10:37 0:00:00
3311 01/11/2007 11:48 0:00:03
3318 01/11/2007 11:54 0:00:04
3133 01/11/2007 12:11 0:00:37
3318 01/11/2007 12:22 0:00:21
3133 01/11/2007 12:23 0:00:00
3133 01/11/2007 12:27 0:00:04
3133 01/11/2007 12:29 0:01:59
3133 01/11/2007 14:25 0:00:53
3380 01/11/2007 14:58 0:00:16
3333 01/11/2007 15:10 0:03:05
3380 01/11/2007 15:12 0:00:26
3133 01/11/2007 16:28 0:03:42
3133 01/11/2007 17:02 0:03:59
3311 02/11/2007 09:24 0:00:05
3311 02/11/2007 09:33 0:00:05
3380 02/11/2007 10:26 0:00:48
3299 02/11/2007 11:17 0:01:22
3314 02/11/2007 11:22 0:00:30
3016 02/11/2007 11:55 0:00:14
3133 02/11/2007 12:01 0:03:46
3278 02/11/2007 12:16 0:01:06
3258 02/11/2007 12:19 0:00:22
3133 02/11/2007 12:37 0:00:21
3294 02/11/2007 14:25 0:00:04
3294 02/11/2007 14:25 0:00:00
3294 02/11/2007 14:26 0:01:25
3294 02/11/2007 14:28 0:01:40
3294 02/11/2007 14:40 0:01:11
3152 02/11/2007 14:57 0:02:45
3380 02/11/2007 14:57 0:00:14
3318 02/11/2007 16:45 0:00:20
3133 05/11/2007 09:21 0:00:03
3133 05/11/2007 09:22 0:00:05
3133 05/11/2007 09:22 0:00:00
3133 05/11/2007 09:27 0:01:15
3209 05/11/2007 09:29 0:00:14
3133 05/11/2007 09:30 0:02:43
3138 05/11/2007 09:34 0:00:15
3133 05/11/2007 09:43 0:00:23
3191 05/11/2007 11:19 0:00:00
3205 05/11/2007 11:21 0:01:21
3149 05/11/2007 11:23 0:00:27
3278 05/11/2007 11:41 0:00:20
3224 05/11/2007 11:55 0:01:05
3224 05/11/2007 12:00 0:00:02
3224 05/11/2007 12:00 0:00:00
3224 05/11/2007 12:04 0:01:37
3336 05/11/2007 12:07 0:01:20
3133 05/11/2007 12:14 0:01:28
3133 05/11/2007 12:20 0:06:15
3133 05/11/2007 12:29 0:00:19
3016 05/11/2007 12:38 0:07:01
3133 05/11/2007 12:39 0:02:43
3133 05/11/2007 12:41 0:00:14
3352 05/11/2007 14:23 0:01:22
3016 05/11/2007 14:30 0:00:59
3336 05/11/2007 16:25 0:01:23
3278 05/11/2007 16:31 0:03:45
3152 06/11/2007 11:25 0:00:40
3333 06/11/2007 11:34 0:00:13
3032 06/11/2007 11:40 0:00:44
3133 06/11/2007 12:08 0:00:58
3133 06/11/2007 12:09 0:00:20
3133 06/11/2007 14:16 0:00:35
3278 06/11/2007 14:45 0:00:13
3133 06/11/2007 14:46 0:04:01
3016 06/11/2007 15:26 0:00:14
3016 06/11/2007 15:48 0:00:05
3016 06/11/2007 16:13 0:00:09
3133 06/11/2007 16:43 0:00:20
3133 06/11/2007 16:45 0:00:37
3016 06/11/2007 16:46 0:00:21
3224 07/11/2007 08:56 0:00:55
3016 07/11/2007 09:04 0:00:15
3016 07/11/2007 09:17 0:01:07
3133 07/11/2007 09:30 0:00:14
3278 07/11/2007 09:38 0:01:05
3178 07/11/2007 09:50 0:00:35
3259 07/11/2007 09:58 0:00:39
3133 07/11/2007 10:27 0:02:34
3191 07/11/2007 10:40 0:00:00
3278 07/11/2007 10:59 0:00:17
3470 07/11/2007 11:16 0:00:00
3470 07/11/2007 11:17 0:00:35
3044 07/11/2007 12:23 0:01:00
3152 07/11/2007 12:27 0:08:07
3336 07/11/2007 12:31 0:01:28
3133 07/11/2007 12:32 0:13:01
3039 07/11/2007 12:43 0:00:51
3278 07/11/2007 12:55 0:01:09
3045 07/11/2007 13:01 0:00:16
3433 07/11/2007 14:09 0:01:32
3433 07/11/2007 14:12 0:02:36
3433 07/11/2007 14:13 0:00:10
3230 07/11/2007 14:28 0:02:09
3044 07/11/2007 14:38 0:00:26
3158 07/11/2007 14:44 0:01:05
3133 07/11/2007 14:53 0:04:36
3044 07/11/2007 15:16 0:00:04
3243 07/11/2007 15:20 0:00:42
3133 07/11/2007 15:22 0:00:24
3133 07/11/2007 15:22 0:00:04
3278 07/11/2007 15:25 0:00:00
3262 07/11/2007 15:40 0:00:18
3044 07/11/2007 15:53 0:00:04
3044 07/11/2007 15:53 0:00:04
3278 07/11/2007 16:03 0:00:19
3278 07/11/2007 16:08 0:01:04
3016 07/11/2007 16:12 0:00:12
3268 07/11/2007 16:19 0:02:13
3380 07/11/2007 16:28 0:02:39

 

[Pete_UK]

One way of doing this is to create TWO records for every call record.
One record to contain START date/time and an indicator set to "S", and
the second to contain END date/time and an indicator set to "E". So,
in E2 you can have a formula:

=B2+C2

for the START records (with "S" in F2), and for the END records you
can have this in E2:

=B2+C2+D2

and "E" in F2. I'm assuming you have just copied the sheet of call
records to the same workbook, so one sheet will be START records and
the other sheet will be END records.

Merge the two sets of records together and sort by date/time (column
E) in ascending sequence. With the S/E indicator in column F, and
assuming first record is in row 2, then in G2 add the formula:

=IF(F2="S",G1+1,G1-1)

and copy this down to all other records (cell G1 should be initialised
to 0 or left blank). Column G should then contain number of
simultaneous calls at any one time. You can easily determine the
maximum number (using the MAX function) AND the number of times that
this number, and every lower number, was reached (using the COUNTIF
function).

As you still have the date and time in separate columns, it is
relatively easy to obtain summary tables by date and time.

Hope this helps.

Pete

 

[Ber]

Pete,

Thank you for looking at this, maybe i'M SLOW but I cannot follow what you
are getting at at all, the duration of the calls does not matter all I want
to know is how many ext nos were active between 9 and 10, 10 and 11 etc as we
need to indicate when the phones are busiest. No idea what you mean by
indicator set to "E" etc.etc.