Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 21.12.2014 beginning time = 1139 min.(UT), 18:59 UT Xbegin = -8.738 nT time of max = 1159 min.(UT), 19:19 UT Xmax = 15.722 nT Y at Xmax = -0.598 nT endtime = 1177 min.(UT), 19:37 UT Xend = -4.314 nT amplitude = 24.460 nT base duration time = 38 min. 2sigma = 5.357 nT duration at 2sigma = 13 min. flagbegin = 0 flagend = 0 flagxcheck = 0