Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 10.09.2008 beginning time = 1205 min.(UT), 20: 5 UT Xbegin = -4.256 nT time of max = 1232 min.(UT), 20:32 UT Xmax = 7.620 nT Y at Xmax = 1.272 nT endtime = 1261 min.(UT), 21: 1 UT Xend = -1.956 nT amplitude = 11.876 nT base duration time = 56 min. 2sigma = 2.802 nT duration at 2sigma = 25 min. flagbegin = 0 flagend = 0 flagxcheck = 0