Based on the discussions with AHT team, guardrail metrics for IP masking can be categorized to several groups. Create this subtask to note all metrics related to admin community. Currently, collected metrics includes:
[x] Number of active admins
**Definition**: an active administrator is a user who has the administrator user right and has made at least one administrative action during a given month. Administration activities include block, protect, delete, and rights. ([[ https://meta.wikimedia.org/wiki/Research:Active_administrator | document ]]).
[x] Number of new admins per month
**Definition**: a new admin is a user who made one administrative action for the first time ever during a given month.
[x] Number of admins w/ advanced permissions
**Definition: ** active admins w/ advanced permissions, including bureaucrat admins, oversight admins, local checkuser admin, and steward (global checkuser) admins. Bureaucrat admins and oversight admins are counted in metrics of "Number of active admins" and "Number of new admins per month". Local checkuser admins and steward admins are not counted in metrics of "Number of active admins" and "Number of new admins per month" as they are from another data source. Below four metrics are the numbers for each category.
**Bureaucrat admins:** admins who grant the sysop user right during a given month
**Oversight admins: **admins who delete revision during a given month
**Local checkuser admins: **admins who use checkuser during a given month on wikis with local checkusers. Wikis with local checkusers are 'metawiki','commonswiki', 'specieswiki', 'wikidatawiki','arwiki', 'bnwiki','cawiki','cswiki','dawiki' , 'dewiki', 'enwiki','eswiki','fawiki','fiwiki','frwiki', 'hewiki','hrwiki','huwiki', 'idwiki','itwiki','jawiki', 'kowiki', 'mlwiki', 'nlwiki', 'plwiki', 'ptwiki', 'rowiki', 'ruwiki', 'simplewiki', 'slwiki', 'srwiki', 'svwiki', 'trwiki', 'ukwiki', 'viwiki','enwikibooks','enwiktionary'.
**Steward admins (global checkuser):** admins who use checkuser during a given month on all wikis without local checkusers
[x] Admin to content ratio
**Definition**: Active admins per million edits during a given month
[x] Admin to active editor ratio
**Definition**: Active admins per thousand active editors during the given month. Active editors are registered users who made at least 5 content edits across all projects in the given month.