Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 27.12.2015 beginning time = 1140 min.(UT), 19: 0 UT Xbegin = -5.228 nT time of max = 1184 min.(UT), 19:45 UT Xmax = 6.612 nT Y at Xmax = 1.156 nT endtime = 1201 min.(UT), 20: 1 UT Xend = 0.116 nT amplitude = 11.840 nT base duration time = 61 min. 2sigma = 5.369 nT duration at 2sigma = 10 min. flagbegin = 0 flagend = 0