弊ぼっちのPostgresは16GB弱のデータを持っているらしいです
$ heroku pg:info
=== HEROKU_POSTGRESQL_PURPLE_URL, DATABASE_URL
Plan: Standard 0
Status: Available
Data Size: 15.6 GB
Tables: 92
PG Version: 13.10
Connections: 19/120
Connection Pooling: Available
Credentials: 1
Fork/Follow: Available
Rollback: earliest from 2023-03-10 02:04 UTC
Created: 2022-04-15 20:29
Region: us
Data Encryption: In Use
Continuous Protection: On
Enhanced Certificates: Off
Maintenance: not required
Maintenance window: Thursdays 19:30 to 23:30 UTC
Add-on: postgresql-tetrahedral-12223
