Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 27.02.2007 beginning time = 1137 min.(UT), 18:57 UT Xbegin = -13.460 nT time of max = 1178 min.(UT), 19:38 UT Xmax = 15.852 nT Y at Xmax = -4.690 nT endtime = 1213 min.(UT), 20:13 UT Xend = -2.650 nT amplitude = 29.312 nT base duration time = 76 min. 2sigma = 8.388 nT duration at 2sigma = 33 min. flagbegin = 0 flagend = 0 flagxcheck = 0