Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 18.08.2008 beginning time = 1252 min.(UT), 20:52 UT Xbegin = -3.436 nT time of max = 1264 min.(UT), 21: 4 UT Xmax = 7.718 nT Y at Xmax = 0.374 nT endtime = 1298 min.(UT), 21:38 UT Xend = -5.228 nT amplitude = 11.154 nT base duration time = 46 min. 2sigma = 10.197 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 0 flagxcheck = 0