Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 23.04.2012 beginning time = 1141 min.(UT), 19: 1 UT Xbegin = -11.868 nT time of max = 1184 min.(UT), 19:44 UT Xmax = 8.858 nT Y at Xmax = -0.302 nT endtime = 1229 min.(UT), 20:29 UT Xend = -1.070 nT amplitude = 20.726 nT base duration time = 88 min. 2sigma = 8.469 nT duration at 2sigma = 4 min. flagbegin = 0 flagend = 0 flagxcheck = 0