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 = 1283 min.(UT), 21:23 UT Xbegin = -1.274 nT time of max = 1298 min.(UT), 21:38 UT Xmax = 9.746 nT Y at Xmax = 0.254 nT endtime = 1357 min.(UT), 22:37 UT Xend = -8.560 nT amplitude = 11.020 nT base duration time = 74 min. 2sigma = 9.887 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 0 flagxcheck = 0