sum of f per outlet: {'O01': 403.66, 'O02': 356.41, 'O03': 243.05}
weighted total = 901.05   scale = 3000 / total = 3.3294

outlet | day        | dow | weekday | rain | holiday | f      | lambda | real
-------+------------+-----+---------+------+---------+--------+--------+-----
O01    | 2025-10-06 | Mon | 1.0     | 1.0  | 1.0     | 1.0000 | 3.33   | 3
O01    | 2025-10-11 | Sat | 1.3     | 1.0  | 1.0     | 1.3000 | 4.33   | 3
O01    | 2026-01-24 | Sat | 1.3     | 1.25 | 1.0     | 1.6445 | 5.48   | 4
O01    | 2026-03-14 | Sat | 1.3     | 1.1  | 1.0     | 2.1150 | 7.04   | 10
O01    | 2026-03-20 | Fri | 0.88    | 1.1  | 1.0     | 0.0000 | 0.00   | 0
O02    | 2026-07-06 | Mon | 1.0     | 0.9  | 1.0     | 0.5128 | 1.45   | 3
O03    | 2026-01-12 | Mon | 1.0     | 1.25 | 1.0     | 0.3795 | 1.01   | 0
O03    | 2026-04-13 | Mon | 1.0     | 1.0  | 1.0     | 1.0240 | 2.73   | 4
O01    | 2026-08-17 | Mon | 1.0     | 0.92 | 0.55    | 0.5262 | 1.75   | 2

month   | expected | actual | difference
--------+----------+--------+-----------
2025-10 | 197.3    | 171    | -26.3
2025-11 | 216.0    | 204    | -12.0
2025-12 | 237.4    | 276    | +38.6
2026-01 | 246.8    | 235    | -11.8
2026-02 | 259.7    | 268    | +8.3
2026-03 | 302.8    | 317    | +14.2
2026-04 | 293.9    | 290    | -3.9
2026-05 | 265.3    | 248    | -17.3
2026-06 | 239.2    | 217    | -22.2
2026-07 | 225.5    | 255    | +29.5
2026-08 | 244.1    | 216    | -28.1
2026-09 | 271.9    | 256    | -15.9
total   | 3000.0   | 2953   | -47.0
