Fig. 2From: Statistical study about the influence of particle precipitation on mesosphere summer echoes in polar latitudes during July 2013Pearson linear and Spearman rank correlation coefficient computed for time intervals of various lengths (t ≥ 2.56 min) having simultaneous PMSE and particle precipitation. For each correlation coefficient, P value is less than 0.05. The horizontal dotted line is drawn to separate positive and negative correlation coefficientsBack to article page