Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 23.04.2021 beginning time = 1246 min.(UT), 20:46 UT Xbegin = -8.342 nT time of max = 1263 min.(UT), 21: 3 UT Xmax = 20.068 nT Y at Xmax = 2.694 nT endtime = 1330 min.(UT), 22:10 UT Xend = -28.890 nT amplitude = 28.410 nT base duration time = 84 min. 2sigma = 12.265 nT duration at 2sigma = 25 min. flagbegin = 0 flagend = 0 flagxcheck = 0