Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 18.08.2008 beginning time = 1222 min.(UT), 20:22 UT Xbegin = -2.228 nT time of max = 1233 min.(UT), 20:33 UT Xmax = 5.202 nT Y at Xmax = -0.080 nT endtime = 1252 min.(UT), 20:52 UT Xend = -3.436 nT amplitude = 7.430 nT base duration time = 30 min. 2sigma = 10.197 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 0 flagxcheck = 0