Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 01.04.2010 beginning time = 1318 min.(UT), 21:58 UT Xbegin = -5.778 nT time of max = 1355 min.(UT), 22:35 UT Xmax = 5.446 nT Y at Xmax = 2.614 nT endtime = 1413 min.(UT), 23:33 UT Xend = -3.080 nT amplitude = 11.224 nT base duration time = 95 min. 2sigma = 6.042 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 0 flagxcheck = 0