Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 15.04.2015 beginning time = 1089 min.(UT), 18: 9 UT Xbegin = -20.402 nT time of max = 1139 min.(UT), 19: 0 UT Xmax = 26.002 nT Y at Xmax = -9.060 nT endtime = 1202 min.(UT), 20: 2 UT Xend = -16.184 nT amplitude = 46.404 nT base duration time =113 min. 2sigma = 13.650 nT duration at 2sigma = 23 min. flagbegin = 0 flagend = 0