  The statistics of charge transport across a tunnel junction with
energy-dependent scattering is investigated. A model with quadratic dispersion
relation is discussed in general and, independently, in the two limiting cases
of a large detector and of a linear dispersion relation. The measurement of
charge takes place according to various protocols. It is found that, as a rule,
the statistics is expressed by means of time-ordered current correlators,
differing however from the conventional ones in the ordering prescription.
Nevertheless binomial statistics is confirmed in all cases.
