added rain, updated graph styles

README.md

@@ -5,15 +5,19 @@ the readings in RRDtool databases, and serves a responsive graph dashboard.
 
 ## What it stores
 
-The service creates `netatmo_outdoor.rrd`, `netatmo_wind.rrd`,
+The service creates `netatmo_outdoor.rrd`, `netatmo_pressure.rrd`,
+`netatmo_wind.rrd`, `netatmo_rain.rrd`,
 `netatmo_bedroom.rrd`, `netatmo_study.rrd`, and `netatmo_living.rrd`. Each has
 ten-minute archives for the last two weeks and six-hour archives covering a
 year. Day, two-week, and year PNG graphs are rendered on demand. The wind graph
 splits average wind into 12 colored direction bands and draws gusts as a line.
+The rain graph stores Netatmo's cumulative `sum_rain_24` reading and shows the
+rain accumulated since midnight in millimetres. Its daily reset is preserved;
+MAX consolidation retains daily totals in the longer-term archive.
 
-The Outdoor module does not contain a pressure sensor, so `outdoor.rrd` combines
-its temperature/humidity with pressure from the main station. A module without
-`dashboard_data` is skipped until it becomes reachable again.
+The Outdoor module does not contain a pressure sensor, so the dedicated pressure
+graph reads it from the main station. Its Y axis is fixed at 900–1100 mbar. A
+module without `dashboard_data` is skipped until it becomes reachable again.
 
 ## Prerequisites and setup
 
@@ -71,7 +75,7 @@ scheduler runs inside the service process. Alternatively set
 ```
 
 `storage.rrd_folder` configures the database directory (default `./rrd`). The
-`modules` section allows the five Netatmo display names to be changed.
+`modules` section allows the Netatmo display names to be changed.
 Set `server.url_prefix: /w` to mount the dashboard, static assets, and every API endpoint
 below `/w`; leave it empty to serve from the site root. When a prefix is set,
 open <http://localhost:5000/w/> instead.
@@ -140,7 +144,9 @@ curl --output wind.png http://localhost:5000/graph/wind/2weeks
 Data points are:
 
 - `outdoor`: `min_temp`, `max_temp`, `humidity`, `pressure`
+- `pressure`: `pressure`
 - `wind`: `gust`, `average`, `angle`
+- `rain`: `sum_rain_24`
 - `bedroom`, `study`, `living`: `temperature`, `co2`, `humidity`
 
 The service creates missing RRDs at startup but deliberately does not alter an