and methods. E07 study the evolution of the SFR-density relation by comparing local SDSS galaxies to the GOODS-S and GOODS-N fields at $z$ $\sim$ 1. They use a magnitude cut in both samples, M$_{\mathrm{B}}$ $\le$ -20, which they state is equivalent to a stellar mass cutoff of M$_*$ $\ge$ 10$^{9}$ M$_{\odot}$ at $z$$=$0.8 and M$_*$ $\ge$ 10$^{10}$ M$_{\odot}$ at $z$$=$ 1.2 (the two extremes of their high-redshift range). The local galaxy density is determined by counting all the galaxies within boxes centered on each galaxy of 1.5 comoving Mpc on a side, in a velocity interval $\Delta$$v$ $=$ $\Delta$$z$/(1 + $z$), $\Delta$$z$ $=$0.02. E07 only include star-forming galaxies in their sample, down to SFR$_{UV}$ limits of 0.5 M$_{\odot}$ yr$^{-1}$ for the $z$$\sim$1 sample. They use the star-forming galaxy sample and SFRs calculated in Brinchmann et al. (2004) for the low-redshift SDSS sample.

E07 first calculates an average SFR ($<$SFR$>$) and local galaxy density in boxes centered on every galaxy. Then they group the galaxies into local density bins and find the median of the distribution of $<$SFR$>$. They find that the median $<$SFR$>$ decreases with increasing galaxy density in the SDSS sample, but, at $z$$\sim$1, the median $<$SFR$>$ first increases 