GCN Circular 18770
A. Melandri (INAF-OAB), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), D.N. Burrows (PSU), T.G.R. Roegiers (PSU), L.M. McCauley (PSU), C. Pagani (U. Leicester), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester) and T.N. Ukwatta report on behalf of the Swift-XRT team: We have analysed xx ks of XRT data for GRB 151228A (Ukwatta et al. GCN Circ. 18731), from xx to 0 s after the BAT trigger. The data are entirely in Photon Counting (PC) mode. We cannot determine at the present time whether the source is fading. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00668543. This circular is an official product of the Swift-XRT team.