Log book automation id

Hello,
Thanks to home assistant it is a very nice tool!
thanks to support to help newbee like me to beginner

I try to use logbook to debug automations.
Some time I have automation and a number in the even column.
What doese this number means and how can I find the line number or the id in the automation file ?

For some automation, I added an alias, but it seams there is sometime the automation id in place of the alias ?

Is the automation id ordered by the order of the order of the automation file ? I think not…

Here is an example of the logbook:

18:49 [Thierry_Galaxy_A50thierry_galaxy_a50 Battery Sensor] changed to 56

18:49 [Date & Time] changed to 2019-11-03, 18:49

18:45 [Proximité ON (life 360)] has been triggered

18:44 [Thierry_Galaxy_A50thierry_galaxy_a50 Battery Sensor]changed to 51

18:44 [Date & Time] changed to 2019-11-03, 18:44

18:43[Light show rainbow 2] turned off

18:43 [automation 26] turned off

18:43[automation 11] turned off

18:43[automation 19] turned off

18:43[Light show rainbow 1] turned off

18:43[automation 27] turned off

18:43[automation 17] turned off

18:43[automation 13] turned off

18:43[automation 28] turned off

18:43 [automation 2] turned off

18:43 [automation 25] turned off

18:43 [automation 24]turned off
"

Any help will be welcome…

Best regards
Thierry