Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 04.10.2021 beginning time = 1274 min.(UT), 21:14 UT Xbegin = -6.320 nT time of max = 1298 min.(UT), 21:38 UT Xmax = 8.446 nT Y at Xmax = -2.640 nT endtime = 1353 min.(UT), 22:33 UT Xend = -5.686 nT amplitude = 14.766 nT base duration time = 79 min. 2sigma = 3.649 nT duration at 2sigma = 34 min. flagbegin = 0 flagend = 0 flagxcheck = 0