And last summer, we sent early prototypes of our technology to 100 volunteers in London, and together they mapped air quality across 1,000 miles of sidewalk and 20 percent of all of central London.
Pada musim panas lalu, kami mengirim prototipe teknologi kami kepada 100 sukarelawan di London. Mereka memetakan kualitas udara bersama-sama sepanjang 1.609,3 km trotoar dan sebanyak 20 persen area London tengah.