[phenixbb] density fit analysis in coot

Dear Friends, Can anyone tell what the number popping up against every bar of the density fit analysis histogram in COOT is? Is it a correlation co-eff between Fo and Fc or something else? I am interested to know how is this parameter calculated. One more question... Is it possible to build a model in COOT if only the electron density map and sequence is given? Although I know there are some programs to create an initial model. I am wondering whether COOT can do that. Thanking you in advance... Raja