Earth Notes: 16WW High Resolution Temperature/RH Dataset (2025)

Updated 2026-01-20.
High-resolution dataset for heating system monitoring. #heatBattery #microgen #dataset
Data collected from a dedicated extra set of room and radiator sensors in 16WW from the end of 2024 to nearly the end of 2025. Useful in conjunction with 16WW energy and Radbot data from the same interval.

See the README.md file:

A stand-alone collection of sensor data from 16WW rooms and radiators mainly from the start of 2025, the first full year of the 16WW heat pump.

16WW is a ~1968 ~76m^2 timber-frame end-of-terrace 3-bedroom house in Kingston-upon-Thames, ie suburban London UK.

The data has temperature at ~30s intervals and ~1/8K granularity, and relative humidity at 60s intervals.

Room sensors were mounted ~1m–2m from the ground, on interior walls, away from heat sources and direct sunlight, and obvious drafts. The sensors were Purrmetrix PMTX010003 with resolution of 0.12C and 0.2%RH, and accuracy of +/-0.5C and 3%RH at 20 to 80%RH else 4.5%RH at > 80%RH.

Radiator sensors were fixed to the front of the radiator at flow/return ends, or on the pipes close to the radiator body, as noted for each sensor. 1gM was mounted on the vertical/horizontal centre of the front face of its radiator, nominally at its mean-temperature point. These were modified Purrmetrix PMTX010003 devices.

Notes

For scale: the 3l (1644725-temp.csv.xz) room sensor temperature log is ~1.5MB and contains just short of 1 million data points, and the corresponding humidity log half that many (and is ~1.1MB). The total across all sensor time series is ~21 million data points (~40MB).

It took ~250MB of a 1GB data allowance to download this data from its host.

Note that the heat-pump was newly installed in (replacing a fossil gas non-condensing combi boiler), was not fully functional until a major fault was cleared , and was tuned throughout the year. The system also contains a solar PV diverter and heat battery.

Dataset

name
16WW 2025 high-resolution temp/RH% data for heating system monitoring
description
16WW London UK 2025 home high-resolution (30s/60s sampling) temperature and relative humidity data from room and radiator sensors for monitoring heat-pump home central-heating system behaviour.
version
2
keywords
heat, home, domestic, heat pump, heating system, temperature, relative humidity, RH%, time series, high resolution, 30s samples, 60s samples, CSV, Kingston-upon-Thames, London, UK
variable measured
temperature Celsius
variable measured
relative humidity %
date created
2026-01-11T15:21:49Z
date published
date modified
2026-01-20T09:00Z
temporal coverage
2024-12-10T12:00Z/2025-12-06T00:00Z
spatial coverage
UK centre 51.406696N,-0.288789E elevation 16m
distribution
directory of sensor ID/location mapping, and compressed CSV data files named by sensor ID and start date
canonical URL
this descriptive text with markup
is part of
16WW Dataset
DOI
10.5281/zenodo.18249224
licence
this dataset is licensed under CC0, ie it is effectively public domain; if you make use of this data, attribution is welcome but not required
is accessible for free
true

Status

IDShort NameCommentVariablesWindow Start (incl)Window End (excl)
16447235sstudy / master bedroomtemp humi
16447247hhallwaytemp humi
16447253lliving roomtemp humi
16447281gsecond bedroomtemp humi
16447292bthird bedroomtemp humi
16447306kkitchentemp humi
16449867h17h pipe TRV endtemp
16449967h27h pipetemp
16450015s15s rad fronttemp
16450025s25s rad fronttemp
16450033l13l pipe TRV endtemp
16450043l23l pipetemp
16450102b12b pipe TRV endtemp
16450121g11g pipe TRV endtemp
16450141g21g pipetemp
16450162b22b pipetemp
16450186k16k pipe TRV endtemp
16450216k26k pipetemp
16450811gM1g centre-fronttemp

Charts

Temperature

1644728 temp 1645012 temp 1645014 temp 1645081 temp 1644729 temp 1645010 temp 1645016 temp 1644725 temp 1645003 temp 1645004 temp 1644723 temp 1645001 temp 1645002 temp 1644730 temp 1645018 temp 1645021 temp 1644724 temp 1644986 temp 1644996 temp

Relative Humidity

1644728 humi 1644729 humi 1644725 humi 1644723 humi 1644730 humi 1644724 humi

Preliminary Analysis

: winter vs summer daily temperature range

A fast sampling of daily temperature swings in the living room: 

xz -d < csv/1644725-temp.csv.xz | \
    sh code/analysisDailyRange.sh > \
        misc/1644725-temp-range.csv

... and manual processing in LibreOffice to produce misc/1644725-temp-range.ods, indicates that mean daily temperature range in 3l is ~2.99°C in , and ~3.75°C in . This sample suggests lower temperature fluctuations in winter even with 16WW's use of strong Radbot-setpoint and WC-delta setbacks.

As a counter-example, looking at radiator pipe temperature in the same room (3l1, 1645003-temp-range.csv) shows the opposite pattern; ie ~12.7°C in , and ~2.81°C in .