The first file on the room heat turns began with room meter cards and the shared line maintenance schedule. The city then checked the source, heard affected residents and sent a second office to repeat the count.

The current Year first, deep rest window 2 file records 52 rooms with a reading before and after a maintenance turn; the previous window records 48. The longer sequence makes the change visible, while each count remains tied to its own dates.

A turning point was the observation that the lowest room cools before the shared line reaches its final branch. It narrowed the discussion from a general claim to a question about how the rule works at the site.

The service board reports the shared line. Residents ask for the room reading after the final branch. The shared record is larger than it was at the start, although the parties still assign it different weight.

The clerk closes this route file and gives the next window a fresh walk. The board closed this docket after it added a second branch mark for the next passage window. The next window starts with a fresh record.