Mean, median and quartile values for pollen volume /m<sup>2</sup>/day) for each meadow treatment type across all cities and surveys, showing significant difference groups (p < 0.05) by the post-hoc Tukey-Kramer-Nemenyi test.

<p>Mean, median and quartile values for pollen volume /m<sup>2</sup>/day) for each meadow treatment type across all cities and surveys, showing significant difference groups (p < 0.05) by the post-hoc Tukey-Kramer-Nemenyi test.</p>