This visualization is part of the Dewpoint Ventilation project hosted at https://github.com/AndunHH/Dew-Point-Ventilation-Zigbee. The introduction to the page can be read here.
Please select a file from your sd-card to visualize the climate data of one month. The file will be processed locally in your browser and NOT uploaded to the internet. You can than zoom into the data or download a picture of it. The green area between the dewpoint graphs show, when the system actually used the ventilator.