Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 10.08.2007 beginning time = 1338 min.(UT), 22:18 UT Xbegin = -5.716 nT time of max = 1376 min.(UT), 22:56 UT Xmax = 9.690 nT Y at Xmax = 1.458 nT endtime = 1410 min.(UT), 23:30 UT Xend = -4.644 nT amplitude = 15.406 nT base duration time = 72 min. 2sigma = 8.766 nT duration at 2sigma = 15 min. flagbegin = 0 flagend = 0 flagxcheck = 0