Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 19.05.2021 beginning time = 1315 min.(UT), 21:55 UT Xbegin = -3.298 nT time of max = 1342 min.(UT), 22:22 UT Xmax = 5.282 nT Y at Xmax = -0.866 nT endtime = 1431 min.(UT), 23:51 UT Xend = -8.920 nT amplitude = 8.580 nT base duration time =116 min. 2sigma = 4.039 nT duration at 2sigma = 10 min. flagbegin = 0 flagend = 4 flagxcheck = 0