Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 28.03.2008 beginning time = 1082 min.(UT), 18: 2 UT Xbegin = -9.498 nT time of max = 1100 min.(UT), 18:20 UT Xmax = 14.068 nT Y at Xmax = -9.168 nT endtime = 1125 min.(UT), 18:45 UT Xend = -3.640 nT amplitude = 23.566 nT base duration time = 43 min. 2sigma = 11.355 nT duration at 2sigma = 9 min. flagbegin = 0 flagend = 0 flagxcheck = 0