Geomagnetic Activity Map - Hourly Ranges

Note: Empty cells of observatories (indicated in the leftmost column by their IAGA codes) indicate that there was insufficient data to calculate a hourly range.

Hourly range (nT) for 2004-04-20
IAGA 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
AAA
AAE2248612148963322384325
ABG61310102167588753113122132314
ABK421310156881118227737635812514797557
AIA125586537414376291393563248
AMS691191212252257744421125224612
API01010000000000000110010
AQU5344576241817143358644421025
ARS
ASC111111268939453643715224
ASP7121353223632211011222251115
BDV7567555551519163585555431347
BEL8679643910181684685666441668
BFE1198114333515161666755663221610
BFO
BLC21233070742842271339913111739112330311437442918
BMT102321011100000000100121
BNG000011100101100000000000
BOU7236655771224396213151414112719
BOX7996348121518447455368451587
BRW101281616485525828454165719151321141216354159
BSL6215334628241011111916798341313
CBB162324354719153622191012122527171432303366716128
CLF75673664513162514296756331357
CMO659761091733361145511599131210222018
CNB916149544173211111232477108
CSY
CTA1116932311732110111222110159
CZT2952610939229548632132121334
DLR622332342622614591912101183820
DOU86784562410162512487766421557
DRV313264523816161520211445711788131022252050
EBR101111111234211121110211
ESK1167115324671020176836764216712
EUA
EYR1813877744864323333448117510
FCC3020231236413410979293615646176191913109162121
FRD8325234838335412141387312812
FRN6533333358233610132141814159314
FUR7567556341320206597555331447
GCK
GDH526522222315212039597515192129132416251519333933
GNA1441917114429242211223633121118
GUA11151322119341000012112279310
GUI223311281349222175786352535
GZH001210011100000000000110
HAD7468353358122018776554221367
HBK52331141811121819107281044232523
HER61232613133721221127854222543
HLP107810532871915936845675416710
HON811312311121222115121441920187
HRB6557564781719102676554431347
HRN5826385633232832679413128161110618171225485825
HUA1311111113261459246102754
HYB
IPM
IQA15419845995438212249435815182745112945261516182742
IRT20314121121111313224112
IZN
KAK123201111000000000001111
KDU2121433113342211111121141218
KMH
KNY023210111000000000000111
KOU12121211213582413745178417
LER1381014523569917132526553220711
LRM16321191044273422212213227719
LVV6688553811191554687456431457
LYC
LZH113132422143710101012112223324106
MAB
MAW
MBO1222112939413111186106743525
MCQ1011979661116165213124546108811
MEA9561012141914313575539441110181013513
MGD
MID
MMB233201111010000010111111
NAQ7740153229881014241077715161071087151110
NCK7557565671719112576555431347
NEW6
NGK8779433441619194786566331769
NUR1181084349819103354546844221111
NVS98668231810469109325433449134
OTT1565846612614624613141389323912
PAF141310813818177565452213724131612
PAG
PEG
PHU6591916521075532112223115106
PPT9384122113211111210831312102
PST
QSB23611921030239271383224353534
RES2718211433121520152396691383265451829632131
SBA25372541179201822361612891781419261448314742
SFS
SHU
SIT3785788131310545483359171418178
SJG3202112312442221019162911526
SOD187138357111315623663571255482839
SPT324424810610202319310767522945
STJ1134825285542251416145452469
SUA
TAM22223121036172414586946523623
TAN
TDC
THL2630111922621221226714142134393552271241385742
THY655756578181992676555431247
TRW72132213262141651023225901136
TSU312236201739221812661383522333
TUC61233334482341112513201815115718
UPS12991042286151110347346733221011
VAL7368353227712181215463221377
VIC3563467391344444518101712151113
VSS111121122914831110233231337
WNG108710424351317207496566431869
YKC131585928128959123118231136157717152313231222