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 = 1074 min.(UT), 17:54 UT Xbegin = -12.360 nT time of max = 1106 min.(UT), 18:26 UT Xmax = 20.654 nT Y at Xmax = -0.904 nT endtime = 1150 min.(UT), 19:10 UT Xend = -5.206 nT amplitude = 33.014 nT base duration time = 76 min. 2sigma = 11.791 nT duration at 2sigma = 24 min. flagbegin = 0 flagend = 0 flagxcheck = 0