Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 05.09.2011 beginning time = 1190 min.(UT), 19:50 UT Xbegin = -7.302 nT time of max = 1216 min.(UT), 20:16 UT Xmax = 10.558 nT Y at Xmax = 1.930 nT endtime = 1273 min.(UT), 21:13 UT Xend = -7.022 nT amplitude = 17.860 nT base duration time = 83 min. 2sigma = 4.352 nT duration at 2sigma = 30 min. flagbegin = 0 flagend = 0 flagxcheck = 0