Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 30.12.2020 beginning time = 1315 min.(UT), 21:55 UT Xbegin = -8.204 nT time of max = 1334 min.(UT), 22:14 UT Xmax = 14.598 nT Y at Xmax = -1.174 nT endtime = 1375 min.(UT), 22:55 UT Xend = -8.758 nT amplitude = 22.802 nT base duration time = 60 min. 2sigma = 5.020 nT duration at 2sigma = 24 min. flagbegin = 0 flagend = 0 flagxcheck = 0