Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 09.10.2015 beginning time = 1285 min.(UT), 21:25 UT Xbegin = -11.274 nT time of max = 1355 min.(UT), 22:35 UT Xmax = 5.214 nT Y at Xmax = 5.824 nT endtime = 1401 min.(UT), 23:21 UT Xend = -6.244 nT amplitude = 16.488 nT base duration time =116 min. 2sigma = 12.144 nT duration at 2sigma = 5 min. flagbegin = 4 flagend = 0