Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 22.12.2021 beginning time = 1099 min.(UT), 18:19 UT Xbegin = -4.282 nT time of max = 1121 min.(UT), 18:41 UT Xmax = 7.470 nT Y at Xmax = 6.570 nT endtime = 1198 min.(UT), 19:58 UT Xend = -6.856 nT amplitude = 11.752 nT base duration time = 99 min. 2sigma = 5.606 nT duration at 2sigma = 14 min. flagbegin = 0 flagend = 4 flagxcheck = 0