Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 23.02.2009 beginning time = 1367 min.(UT), 22:47 UT Xbegin = -4.354 nT time of max = 1411 min.(UT), 23:31 UT Xmax = 6.168 nT Y at Xmax = 1.782 nT endtime = 1456 min.(UT), 24:16 UT Xend = -3.090 nT amplitude = 10.522 nT base duration time = 89 min. 2sigma = 4.099 nT duration at 2sigma = 29 min. flagbegin = 0 flagend = 0 flagxcheck = 0