  The integrated luminosities of the data samples collected in the BESIII
experiment in 2016--2017 at center-of-mass energies between 4.19 and 4.28 GeV
are measured with a precision better than 1% by analyzing large-angle Bhabha
scattering events. The integrated luminosities of the old data sets collected
in 2010--2014 are updated by considering correction related to the detector
performance, offsettting the effect of newly discovered readout errors in the
electromagnetic calorimeter that happen haphazardly.
