Nuller global throughput maps at various observation periods of a kernel-nuller at the focus of the four VLTI UTs, observing the ±30 mas FOV surrounding the target HIP 107773. The throughput maps allow us to assess the overall off-axis efficiency of a nulling observing sequence. In panel a, we see the throughput map for a single snapshot pointing at zenith. For the following maps, we computed the throughput maps at each pointing and then co-added the maps over the range of hour angle: panel b is the throughput map for three equally spaced pointings over a ±1 h range of hour angle, panel c is that for five equally spaced pointings over ±2 h, panel d for seven equally spaced pointings over ±3 h, and panel e for nine equally spaced pointings over ±4 h. The pointings of the projected array are shown inset in each throughput map. A white star in each map marks the location of the central star where the rejection by the nuller is optimal, as shown by the on-axis null. The five maps share the same colour bar where the transmission is expressed in units of the planet flux.