Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 03.09.2008 beginning time = 1353 min.(UT), 22:33 UT Xbegin = 1.138 nT time of max = 1370 min.(UT), 22:50 UT Xmax = 7.114 nT Y at Xmax = -4.078 nT endtime = 1419 min.(UT), 23:39 UT Xend = -14.248 nT amplitude = 5.976 nT base duration time = 66 min. 2sigma = 5.846 nT duration at 2sigma = 9 min. flagbegin = 0 flagend = 0 flagxcheck = 0