slightly significantP < 0.01
There were no statistical differences for Pb concentrations for date (P = 0.175) and depth (P = 0.495), but the interaction was slightly significant (P < 0.01).
There were no statistical differences for Pb concentrations for date (P = 0.175) and depth (P = 0.495), but the interaction was slightly significant (P < 0.01).