Parameters of the midlatitude positive bays (MPB)
 Calculated at Space Research and Technology Institute, Sofia, Bulgaria
 
 Station: PAG
 Date of observation: 21.12.2007
 
 beginning time = 1166 min.(UT), 19:26 UT
 Xbegin =        -16.268 nT
 time of max =    1182 min.(UT), 19:42 UT
 Xmax =           12.972 nT
 Y at Xmax =      -2.652 nT
 endtime =        1213 min.(UT), 20:13 UT
 Xend =           -1.076 nT
 amplitude =      29.240 nT
 base duration time = 47 min.
 2sigma =          6.072 nT
 duration at 2sigma = 20 min.
 flagbegin = 0
 flagend =   0
 flagxcheck = 0