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 1991-05-23
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
AAE
ABG
ABK
AIA
AMS5564146910121610121219181120811105111019
API
AQU
ARS
ASC
ASP
BDV
BEL
BFE23131775791618171229523651622217232221295519
BFO
BLC37545941495219222362011221936716233555712211012123426419923179
BMT
BNG
BOU25189545443877567102219121011281621
BOX
BRW746210049132385435119642437811739795139391069648648966
BSL3029151051067918117231427452013101112142920
CBB2060513828153527902483966715811412725828923144225119618471
CLF1173355435747981618151081097167
CMO4526453185553519653122483328423845117429384941656560
CNB10644372355245121273557210815
CSY
CTA
CZT12555763488886104594656885
DLR2925121156891018117109203281991214131823
DOU
DRV111137210168115582944467453102861209310710072129141127615782
EBR
ESK109682958126920202222291013101412202112
EUA
EYR
FCC988673682281633531147131487227134412919033834958108605258261
FRD14106339222448136211781221911202012
FRN172010873467126456413720156126721
FUR
GCK
GDH9738326067181791362783561752402791661642616213910394120738660
GNA
GUA2731117175661484581341571157881619
GUI
GZH
HAD1512665654111011912162525151414211213239
HBK
HER
HLP
HON12113389667564386141761011118289
HRB
HRN
HUA
HYB
IPM
IQA
IRT
IZN
KAK122697175691413101052411221012571025179
KDU
KMH
KNY
KOU
LER15102122613951010910544119223096420635028
LRM
LVV
LYC
LZH
MAB
MAW
MBO
MCQ
MEA4729354312180181916110620461237610416871142234281339155
MGD
MID
MMB
NAQ16294175751423008096162150333688177124154666985105136587557216
NCK
NEW35271214131154188992224132218127139323631
NGK
NUR27141277761214161438725747682913181020606825
NVS
OTT2615236121648222061416111425712312928764118
PAF3522116610447685111255765218863530
PAG
PEG
PHU
PPT2065371154956371071691412711134410
PST
QSB
RES
SBA
SFS
SHU
SIT444734223046141432148141056350143978252016286525
SJG201476793389812147915168117772013
SOD2001094627252121121020124319516040801225540378592206190
SPT
STJ37402122152981514243269226423453025525237795517
SUA
TAM
TAN
TDC
THL4342514053206266581351552061908437193121109374166963728
THY106555577595887182111711799156
TRW
TSU
TUC221778646681375581322618771091216
UPS
VAL
VIC43411713121088198101020221221211217179282738
VSS
WNG
YKC