Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 26.05.2007 beginning time = 1115 min.(UT), 18:35 UT Xbegin = -3.446 nT time of max = 1167 min.(UT), 19:27 UT Xmax = 6.832 nT Y at Xmax = 5.012 nT endtime = 1217 min.(UT), 20:17 UT Xend = -2.718 nT amplitude = 10.278 nT base duration time =102 min. 2sigma = 6.827 nT duration at 2sigma = 1 min. flagbegin = 0 flagend = 0 flagxcheck = 0