Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 27.09.2010 beginning time = 1344 min.(UT), 22:24 UT Xbegin = -6.582 nT time of max = 1367 min.(UT), 22:47 UT Xmax = 13.002 nT Y at Xmax = -0.682 nT endtime = 1394 min.(UT), 23:14 UT Xend = -6.632 nT amplitude = 19.584 nT base duration time = 50 min. 2sigma = 5.519 nT duration at 2sigma = 25 min. flagbegin = 0 flagend = 0 flagxcheck = 0