Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 13.02.2007 beginning time = 1227 min.(UT), 20:27 UT Xbegin = -15.036 nT time of max = 1272 min.(UT), 21:12 UT Xmax = 14.502 nT Y at Xmax = 4.420 nT endtime = 1330 min.(UT), 22:10 UT Xend = -12.546 nT amplitude = 29.538 nT base duration time =103 min. 2sigma = 12.395 nT duration at 2sigma = 28 min. flagbegin = 0 flagend = 0 flagxcheck = 0