Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 31.01.2007 beginning time = 1061 min.(UT), 17:41 UT Xbegin = -15.274 nT time of max = 1107 min.(UT), 18:27 UT Xmax = 9.648 nT Y at Xmax = -3.880 nT endtime = 1146 min.(UT), 19: 6 UT Xend = 0.008 nT amplitude = 24.922 nT base duration time = 85 min. 2sigma = 7.770 nT duration at 2sigma = 15 min. flagbegin = 0 flagend = 0 flagxcheck = 0