Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 26.12.2015 beginning time = 1263 min.(UT), 21: 3 UT Xbegin = -15.578 nT time of max = 1298 min.(UT), 21:38 UT Xmax = 30.090 nT Y at Xmax = 0.748 nT endtime = 1339 min.(UT), 22:19 UT Xend = -16.034 nT amplitude = 45.668 nT base duration time = 76 min. 2sigma = 11.279 nT duration at 2sigma = 33 min. flagbegin = 0 flagend = 0