Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 18.02.2009 beginning time = 1359 min.(UT), 22:39 UT Xbegin = -2.448 nT time of max = 1378 min.(UT), 22:58 UT Xmax = 6.266 nT Y at Xmax = -2.426 nT endtime = 1412 min.(UT), 23:32 UT Xend = -1.546 nT amplitude = 8.714 nT base duration time = 53 min. 2sigma = 2.416 nT duration at 2sigma = 26 min. flagbegin = 0 flagend = 0 flagxcheck = 0