Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 08.09.2008 beginning time = 1120 min.(UT), 18:40 UT Xbegin = -13.874 nT time of max = 1152 min.(UT), 19:12 UT Xmax = 14.150 nT Y at Xmax = -0.134 nT endtime = 1222 min.(UT), 20:22 UT Xend = -6.576 nT amplitude = 28.024 nT base duration time =102 min. 2sigma = 6.912 nT duration at 2sigma = 28 min. flagbegin = 0 flagend = 4 flagxcheck = 0