Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 22.10.2009 beginning time = 1207 min.(UT), 20: 7 UT Xbegin = -13.580 nT time of max = 1273 min.(UT), 21:13 UT Xmax = 6.440 nT Y at Xmax = 0.128 nT endtime = 1299 min.(UT), 21:39 UT Xend = -4.852 nT amplitude = 20.020 nT base duration time = 92 min. 2sigma = 6.087 nT duration at 2sigma = 5 min. flagbegin = 4 flagend = 0 flagxcheck = 0