Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 16.04.2008 beginning time = 1083 min.(UT), 18: 3 UT Xbegin = -7.832 nT time of max = 1114 min.(UT), 18:34 UT Xmax = 5.924 nT Y at Xmax = 18.346 nT endtime = 1156 min.(UT), 19:16 UT Xend = -10.646 nT amplitude = 13.756 nT base duration time = 73 min. 2sigma = 6.754 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 0 flagxcheck = 0