Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 21.12.2016 beginning time = 1198 min.(UT), 19:58 UT Xbegin = -7.596 nT time of max = 1228 min.(UT), 20:28 UT Xmax = 8.988 nT Y at Xmax = 14.138 nT endtime = 1245 min.(UT), 20:45 UT Xend = -7.540 nT amplitude = 16.584 nT base duration time = 47 min. 2sigma = 10.788 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 0 flagxcheck = 0