Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 28.08.2010 beginning time = 1278 min.(UT), 21:18 UT Xbegin = 1.762 nT time of max = 1291 min.(UT), 21:31 UT Xmax = 4.946 nT Y at Xmax = -3.626 nT endtime = 1351 min.(UT), 22:31 UT Xend = -3.270 nT amplitude = 3.184 nT base duration time = 73 min. 2sigma = 4.245 nT duration at 2sigma = 5 min. flagbegin = 0 flagend = 0 flagxcheck = 0