Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 25.05.2013 beginning time = 1177 min.(UT), 19:37 UT Xbegin = -14.450 nT time of max = 1214 min.(UT), 20:14 UT Xmax = 24.264 nT Y at Xmax = 14.990 nT endtime = 1299 min.(UT), 21:39 UT Xend = -17.178 nT amplitude = 38.714 nT base duration time =122 min. 2sigma = 13.531 nT duration at 2sigma = 22 min. flagbegin = 0 flagend = 4 flagxcheck = 0