Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 08.09.2007 beginning time = 1173 min.(UT), 19:33 UT Xbegin = -2.738 nT time of max = 1198 min.(UT), 19:58 UT Xmax = 5.120 nT Y at Xmax = 1.122 nT endtime = 1233 min.(UT), 20:33 UT Xend = -1.832 nT amplitude = 7.858 nT base duration time = 60 min. 2sigma = 2.727 nT duration at 2sigma = 23 min. flagbegin = 0 flagend = 0 flagxcheck = 0