Despite a large variability, the median values of TNO3 and TPO4 are both significantly different from zero and from each other. To confirm this, we scrambled the sampling time to construct 10,000 randomized conglomerate data sets and found the median trends for each of these random populations (MToRP). This showed that the probabilities of the observed medians in TNO3 and 20 TPO4 being zero are less than 2 x 10 -2 and 1 x 10 -5 respectively when compared to 10,000 randomized data sets (Table ). Moreover, sign and Kruskal-Wallis tests also supported that both median trends are significantly different from zero and each other (Table ). Thus, there is some support for a shoaling of the nitracline, and strong support for a deepening of the phosphacline.