<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.viwango vya wastani vya no2 katika mkoa wa hubei nchini uchina, ambapo jiji la wuhan liko, onyesha kushuka kwa kasi wakati wizi wa umeme ulipoanza tazama takwimu 3 - jopo la kushoto.  <response>: daily average concentrations of no2 in hubei province in china, where the city of wuhan is located, show a steep decline as the lockdown came into force see figure 3 - left panel. 