Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 01.05.2008 beginning time = 1307 min.(UT), 21:47 UT Xbegin = -10.180 nT time of max = 1344 min.(UT), 22:24 UT Xmax = 9.044 nT Y at Xmax = 0.860 nT endtime = 1409 min.(UT), 23:29 UT Xend = -10.886 nT amplitude = 19.224 nT base duration time =102 min. 2sigma = 5.397 nT duration at 2sigma = 16 min. flagbegin = 0 flagend = 0 flagxcheck = 0