Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 01.04.2011 beginning time = 1366 min.(UT), 22:46 UT Xbegin = -6.436 nT time of max = 1392 min.(UT), 23:12 UT Xmax = 6.684 nT Y at Xmax = -0.592 nT endtime = 1462 min.(UT), 24:22 UT Xend = -9.564 nT amplitude = 13.120 nT base duration time = 96 min. 2sigma = 8.242 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 0 flagxcheck = 0