Individual covariate plots

[annaren]

Can anone help me determine how MARK calulate the estimates for the individual covariate plots.
I undersatnd from writing out the model equations exactly how the real parameters given in the model output are estimated but am confused about the values on the indivudal covariate plots.

When I plot the individual covariate plot and look at the output in excel the values in the covariate column are broken down into many more intervals that are in my data, i.e my covariate has 14 differnet values ranging from 0.93-13.67 but MARK breaks this down into 101 intervals with the within this range. I have not standardized my variables but allowed MARK to automatically scale them.

Additionally when I specify the value of the covariate using the user defined button and look at the parameters estimates they are not the same as the values given when I look at the individual covariate plots, i.e when cov(width)=13, Phi 1 = 0.29 but looking at the covariate plot for width =13 Phi 1 = 0.399.

THANKS HEAPS