Q03. Monthly revenue: amount charged per month (FR-9).   [12 row(s)]
month   | bills | charged  | avg_bill
--------+-------+----------+---------
2025-10 | 171   | 8362000  | 48901.0
2025-11 | 204   | 9561000  | 46868.0
2025-12 | 276   | 13406000 | 48572.0
2026-01 | 235   | 11551000 | 49153.0
2026-02 | 268   | 13398000 | 49993.0
2026-03 | 317   | 15927000 | 50243.0
2026-04 | 290   | 14391000 | 49624.0
2026-05 | 248   | 11933000 | 48117.0
2026-06 | 217   | 10702000 | 49318.0
2026-07 | 255   | 12568000 | 49286.0
2026-08 | 216   | 10501000 | 48616.0
2026-09 | 256   | 11913000 | 46535.0
