Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 09.07.2009 beginning time = 1425 min.(UT), 23:45 UT Xbegin = -3.698 nT time of max = 1440 min.(UT), 24: 0 UT Xmax = 4.805 nT Y at Xmax = -1.580 nT endtime = 1457 min.(UT), 24:17 UT Xend = 1.582 nT amplitude = 9.810 nT base duration time = 32 min. 2sigma = 3.687 nT duration at 2sigma = 10 min. flagbegin = 0 flagend = 0 flagxcheck = 0