Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 05.09.2007 beginning time = 1146 min.(UT), 19: 6 UT Xbegin = -8.256 nT time of max = 1173 min.(UT), 19:33 UT Xmax = 7.866 nT Y at Xmax = 5.676 nT endtime = 1207 min.(UT), 20: 7 UT Xend = -1.656 nT amplitude = 16.122 nT base duration time = 61 min. 2sigma = 5.846 nT duration at 2sigma = 18 min. flagbegin = 0 flagend = 0 flagxcheck = 0