Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 12.03.2008 beginning time = 1200 min.(UT), 20: 0 UT Xbegin = -17.908 nT time of max = 1229 min.(UT), 20:29 UT Xmax = 19.788 nT Y at Xmax = -7.570 nT endtime = 1301 min.(UT), 21:41 UT Xend = -10.316 nT amplitude = 37.696 nT base duration time =101 min. 2sigma = 8.324 nT duration at 2sigma = 35 min. flagbegin = 0 flagend = 4 flagxcheck = 0