Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 06.04.2012 beginning time = 1325 min.(UT), 22: 5 UT Xbegin = -4.162 nT time of max = 1344 min.(UT), 22:24 UT Xmax = 5.536 nT Y at Xmax = 1.260 nT endtime = 1406 min.(UT), 23:26 UT Xend = -3.734 nT amplitude = 9.698 nT base duration time = 81 min. 2sigma = 2.441 nT duration at 2sigma = 17 min. flagbegin = 0 flagend = 4 flagxcheck = 0