Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 16.04.2021 beginning time = 1407 min.(UT), 23:27 UT Xbegin = -8.816 nT time of max = 1440 min.(UT), 24: 0 UT Xmax = 14.092 nT Y at Xmax = 0.552 nT endtime = 1512 min.(UT), 25:12 UT Xend = -20.638 nT amplitude = 22.908 nT base duration time =105 min. 2sigma = 9.892 nT duration at 2sigma = 20 min. flagbegin = 0 flagend = 2 flagxcheck = 1