Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 26.08.2011 beginning time = 1147 min.(UT), 19: 7 UT Xbegin = -3.130 nT time of max = 1166 min.(UT), 19:26 UT Xmax = 5.060 nT Y at Xmax = 3.052 nT endtime = 1243 min.(UT), 20:43 UT Xend = -4.030 nT amplitude = 8.190 nT base duration time = 96 min. 2sigma = 3.232 nT duration at 2sigma = 17 min. flagbegin = 0 flagend = 4 flagxcheck = 0