Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 09.12.2016 beginning time = 1083 min.(UT), 18: 3 UT Xbegin = -21.054 nT time of max = 1160 min.(UT), 19:20 UT Xmax = 20.980 nT Y at Xmax = 18.954 nT endtime = 1220 min.(UT), 20:20 UT Xend = -15.256 nT amplitude = 42.034 nT base duration time =137 min. 2sigma = 13.567 nT duration at 2sigma = 23 min. flagbegin = 4 flagend = 2 flagxcheck = 0