--date-spec=hr changes number of unique visitors

[pozitron57]

This code gives 482 unique visitors for 13 September.

zcat -f /var/log/nginx/access.log.1 | \
grep -v -f /home/slisakov/scripts/exclude-list.txt |\
goaccess \
  --http-protocol=no \
  --http-method=no \
  --ignore-panel=HOSTS \
  --date-spec=hr \
  --ignore-panel=REFERRING_SITES \
  --sort-panel=REQUESTS,BY_VISITORS,DESC \
  --anonymize-ip \
  --exclude-ip 176.190.94.0-176.190.94.255\
  --ignore-crawlers \
  --log-format COMBINED \
  --output /var/www/html/yesterday/index.html \
  -

If the --date-spec=hr option is omitted, number of unique visitors changes to 375, leaving other fields (total requests, valid requests etc.) intact.

What can be the reason of this difference?

(My confusion in #2554 actually stems from this issue)

[allinurl]

I understand. So, if you're using the --date-spec=hr option, the numbers will vary. Are you suggesting that you'd like the unique visitor count to be grouped by date instead of the current behavior?

[pozitron57]

I understand. So, if you're using the --date-spec=hr option, the numbers will vary. Are you suggesting that you'd like the unique visitor count to be grouped by date instead of the current behavior?

Yes.