Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 27.07.2008 beginning time = 1304 min.(UT), 21:44 UT Xbegin = -6.672 nT time of max = 1328 min.(UT), 22: 8 UT Xmax = 9.912 nT Y at Xmax = 10.354 nT endtime = 1362 min.(UT), 22:42 UT Xend = -7.552 nT amplitude = 16.584 nT base duration time = 58 min. 2sigma = 3.814 nT duration at 2sigma = 22 min. flagbegin = 0 flagend = 0 flagxcheck = 0