Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 28.03.2008 beginning time = 1381 min.(UT), 23: 1 UT Xbegin = -7.120 nT time of max = 1410 min.(UT), 23:30 UT Xmax = 15.546 nT Y at Xmax = -7.112 nT endtime = 1446 min.(UT), 24: 6 UT Xend = -6.158 nT amplitude = 22.666 nT base duration time = 65 min. 2sigma = 11.355 nT duration at 2sigma = 16 min. flagbegin = 0 flagend = 0 flagxcheck = 0