Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 15.12.2015 beginning time = 1259 min.(UT), 20:59 UT Xbegin = -8.458 nT time of max = 1292 min.(UT), 21:30 UT Xmax = 5.502 nT Y at Xmax = -6.092 nT endtime = 1345 min.(UT), 22:25 UT Xend = -2.478 nT amplitude = 13.960 nT base duration time = 86 min. 2sigma = 8.170 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 0