Fig. 3From: Did real economic uncertainty drive risk connectedness in the oil–stock nexus during the COVID-19 outbreak? A partial wavelet coherence analysisWavelet power spectrums (WPS) of the time series. The hotter colors such as yellow and red correspond to higher volatility level, and colder colors such as green and blue correspond to lower volatility level. A contours black line represents statistically significant areas at 5% level, where the significance values are generated through Monte Carlo simulationsBack to article page