Parameters of the midlatitude positive bays (MPB) Calculated at Space Research and Technology Institute, Sofia, Bulgaria Station: PAG Date of observation: 23.05.2007 beginning time = 1109 min.(UT), 18:29 UT Xbegin = -15.082 nT time of max = 1168 min.(UT), 19:28 UT Xmax = 6.282 nT Y at Xmax = -0.612 nT endtime = 1175 min.(UT), 19:35 UT Xend = -15.392 nT amplitude = 21.364 nT base duration time = 66 min. 2sigma = 11.179 nT duration at 2sigma = 0 min. flagbegin = 0 flagend = 0 flagxcheck = 0