Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 05.12.2008 beginning time = 1320 min.(UT), 22: 0 UT Xbegin = -1.176 nT time of max = 1353 min.(UT), 22:33 UT Xmax = 6.816 nT Y at Xmax = 10.570 nT endtime = 1412 min.(UT), 23:32 UT Xend = -7.998 nT amplitude = 7.992 nT base duration time = 92 min. 2sigma = 5.778 nT duration at 2sigma = 6 min. flagbegin = 0 flagend = 0 flagxcheck = 0