Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 08.05.2009 beginning time = 1224 min.(UT), 20:24 UT Xbegin = -3.810 nT time of max = 1259 min.(UT), 20:59 UT Xmax = 11.126 nT Y at Xmax = -1.804 nT endtime = 1300 min.(UT), 21:40 UT Xend = -8.762 nT amplitude = 14.936 nT base duration time = 76 min. 2sigma = 6.258 nT duration at 2sigma = 16 min. flagbegin = 0 flagend = 0 flagxcheck = 0