Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 28.11.2008 beginning time = 1297 min.(UT), 21:37 UT Xbegin = -4.232 nT time of max = 1348 min.(UT), 22:28 UT Xmax = 5.252 nT Y at Xmax = 1.854 nT endtime = 1399 min.(UT), 23:19 UT Xend = -3.954 nT amplitude = 9.484 nT base duration time =102 min. 2sigma = 2.927 nT duration at 2sigma = 26 min. flagbegin = 0 flagend = 2 flagxcheck = 0