Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 09.09.2008 beginning time = 1340 min.(UT), 22:20 UT Xbegin = -5.634 nT time of max = 1367 min.(UT), 22:47 UT Xmax = 13.926 nT Y at Xmax = 1.484 nT endtime = 1403 min.(UT), 23:23 UT Xend = -2.304 nT amplitude = 19.560 nT base duration time = 63 min. 2sigma = 4.036 nT duration at 2sigma = 24 min. flagbegin = 0 flagend = 0 flagxcheck = 0