The degrees of freedom: as given (or the default), also where z tests are used.
The coefficients kept (R's Estimate).
"t test of coefficients" or "z test of coefficients".
The names of the coefficients kept (the table's row names).
The number of observations of the fit (rows of non-zero weight).
Two-sided p-values.
The t or z statistics.
"t value" or "z value".
Their standard errors (R's Std. Error).
Warnings, including those of a covariance function called.
Result of coeftest: R's coefficient table with its attributes.