Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 25.08.2007 beginning time = 1151 min.(UT), 19:11 UT Xbegin = -4.868 nT time of max = 1178 min.(UT), 19:38 UT Xmax = 5.766 nT Y at Xmax = 3.762 nT endtime = 1221 min.(UT), 20:21 UT Xend = -4.580 nT amplitude = 10.634 nT base duration time = 70 min. 2sigma = 3.880 nT duration at 2sigma = 14 min. flagbegin = 0 flagend = 4 flagxcheck = 0