Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 20.03.2008 beginning time = 1317 min.(UT), 21:57 UT Xbegin = -3.344 nT time of max = 1340 min.(UT), 22:20 UT Xmax = 8.266 nT Y at Xmax = -0.876 nT endtime = 1400 min.(UT), 23:20 UT Xend = -3.926 nT amplitude = 11.610 nT base duration time = 83 min. 2sigma = 5.472 nT duration at 2sigma = 22 min. flagbegin = 0 flagend = 0 flagxcheck = 0