Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 12.12.2017 beginning time = 1168 min.(UT), 19:28 UT Xbegin = -12.022 nT time of max = 1198 min.(UT), 19:58 UT Xmax = 22.526 nT Y at Xmax = 3.884 nT endtime = 1226 min.(UT), 20:26 UT Xend = -4.060 nT amplitude = 34.548 nT base duration time = 58 min. 2sigma = 8.294 nT duration at 2sigma = 30 min. flagbegin = 0 flagend = 0 flagxcheck = 0