Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 05.05.2010 beginning time = 1148 min.(UT), 19: 8 UT Xbegin = -5.262 nT time of max = 1168 min.(UT), 19:28 UT Xmax = 8.704 nT Y at Xmax = -1.420 nT endtime = 1215 min.(UT), 20:15 UT Xend = -3.648 nT amplitude = 13.966 nT base duration time = 67 min. 2sigma = 3.903 nT duration at 2sigma = 35 min. flagbegin = 0 flagend = 0 flagxcheck = 0