Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 31.10.2021 beginning time = 1224 min.(UT), 20:24 UT Xbegin = -9.250 nT time of max = 1271 min.(UT), 21:11 UT Xmax = 14.792 nT Y at Xmax = 1.568 nT endtime = 1316 min.(UT), 21:56 UT Xend = -15.122 nT amplitude = 24.042 nT base duration time = 92 min. 2sigma = 7.633 nT duration at 2sigma = 31 min. flagbegin = 0 flagend = 0 flagxcheck = 0