Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 30.05.2010 beginning time = 1396 min.(UT), 23:16 UT Xbegin = -3.150 nT time of max = 1420 min.(UT), 23:40 UT Xmax = 12.730 nT Y at Xmax = -2.498 nT endtime = 1452 min.(UT), 24:12 UT Xend = -5.232 nT amplitude = 15.880 nT base duration time = 56 min. 2sigma = 9.887 nT duration at 2sigma = 14 min. flagbegin = 0 flagend = 0 flagxcheck = 0