Fig. 2From: Total coliforms as an indicator of human enterovirus presence in surface water across Tianjin city, ChinaCorrelation matrix between virus concentration and water parameters analyzed by Pearson correlation analysis (p < 0.01). The range of the coefficients is from − 1 to 1, where − 1 indicates a direct negative correlation, 0 indicates no correlation, and 1 indicates a direct positive correlationBack to article page