Parameters of the midlatitude positive bays (MPB)
 Calculated at Space Research and Technology Institute, Sofia, Bulgaria
 
 Station: PAG
 Date of observation: 21.12.2021
 
 beginning time = 1131 min.(UT), 18:51 UT
 Xbegin =        -11.690 nT
 time of max =    1158 min.(UT), 19:18 UT
 Xmax =            9.610 nT
 Y at Xmax =       1.814 nT
 endtime =        1213 min.(UT), 20:13 UT
 Xend =           -5.618 nT
 amplitude =      21.300 nT
 base duration time = 82 min.
 2sigma =          4.735 nT
 duration at 2sigma = 29 min.
 flagbegin = 0
 flagend =   0
 flagxcheck = 0