Parameters of the midlatitude positive bays (MPB)
 Calculated at Space Research and Technology Institute, Sofia, Bulgaria
 
 Station: PAG
 Date of observation: 20.12.2021
 
 beginning time = 1255 min.(UT), 20:55 UT
 Xbegin =         -5.560 nT
 time of max =    1329 min.(UT), 22: 9 UT
 Xmax =            8.468 nT
 Y at Xmax =      -1.100 nT
 endtime =        1400 min.(UT), 23:20 UT
 Xend =           -8.728 nT
 amplitude =      14.028 nT
 base duration time =145 min.
 2sigma =          7.318 nT
 duration at 2sigma = 10 min.
 flagbegin = 4
 flagend =   4
 flagxcheck = 0