Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 08.12.2010 beginning time = 1150 min.(UT), 19:10 UT Xbegin = -2.856 nT time of max = 1206 min.(UT), 20: 6 UT Xmax = 7.586 nT Y at Xmax = -0.226 nT endtime = 1234 min.(UT), 20:34 UT Xend = -2.994 nT amplitude = 10.442 nT base duration time = 84 min. 2sigma = 4.520 nT duration at 2sigma = 18 min. flagbegin = 0 flagend = 0 flagxcheck = 0