Supplementary materials: Environmental conditions for Danish storage buildings, reviewing 20 years of air quality surveys

<p>S1: Extended information on sites</p> <p>S2: Origin of data, list of previous studies</p> <p>S3: Method: technical details and suppliers list</p> <p>S4: Temperature, RH, TWPI and energy consumption</p> <p>S5: Formic and acetic acid concentration, summer and winter</p> <p>S6: Ozone and nitrogen dioxide measurements, and air exchange rates</p>