Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 28.12.2018 beginning time = 1163 min.(UT), 19:23 UT Xbegin = -14.348 nT time of max = 1220 min.(UT), 20:20 UT Xmax = 15.326 nT Y at Xmax = 5.024 nT endtime = 1252 min.(UT), 20:52 UT Xend = -8.244 nT amplitude = 29.674 nT base duration time = 89 min. 2sigma = 11.783 nT duration at 2sigma = 12 min. flagbegin = 0 flagend = 0 flagxcheck = 0