Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 20.05.2021 beginning time = 1252 min.(UT), 20:52 UT Xbegin = -4.204 nT time of max = 1292 min.(UT), 21:32 UT Xmax = 12.150 nT Y at Xmax = 1.724 nT endtime = 1347 min.(UT), 22:27 UT Xend = -7.826 nT amplitude = 16.354 nT base duration time = 95 min. 2sigma = 11.791 nT duration at 2sigma = 3 min. flagbegin = 0 flagend = 0 flagxcheck = 0