Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 13.05.2021 beginning time = 1355 min.(UT), 22:35 UT Xbegin = -1.888 nT time of max = 1385 min.(UT), 23: 5 UT Xmax = 6.940 nT Y at Xmax = -2.256 nT endtime = 1430 min.(UT), 23:50 UT Xend = -2.248 nT amplitude = 8.828 nT base duration time = 75 min. 2sigma = 4.327 nT duration at 2sigma = 14 min. flagbegin = 0 flagend = 0 flagxcheck = 0