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 1991-10-17
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
AMS241446433245297365462536
API
AQU
ARS
ASC
ASP
BDV
BEL
BFE23221132610424411525474949
BFO
BLC92317181715412691017254456483031244158603917
BMT
BNG
BOU21101101111136861612365323
BOX
BRW67363322495481216171120182513122118
BSL311211321344564710234
CBB201819121091286857163272444297728470592641
CLF221111525845145832243323
CMO765554266455814144814251411161411
CNB537257822222265253322353
CSY
CTA
CZT243324335154433422431834
DLR23112113213338131755252123
DOU
DRV106991093332373614121214151939573114262675508611282
EBR
ESK32101131277546710416636412
EUA
EYR
FCC7966642456121417291818131991212211717
FRD11111111111221011843787211
FRN54211111111116536221148644
FUR
GCK
GDH21752020812836252326212113641124940533019161221
GNA
GUA121221334222245133222989
GUI
GZH
HAD13212233271362781154363635
HBK
HER
HLP
HON53442112112226526251013533
HRB
HRN
HUA
HYB
IPM
IQA
IRT
IZN
KAK51293323314531210452742256
KDU
KMH
KNY
KOU
LER965221113638461012441174111029
LRM
LVV
LYC
LZH
MAB
MAW
MBO
MCQ
MEA33221102023431418566483795
MGD
MID
MMB
NAQ1111172111633644106712291782321147363657
NCK
NEW212111111111382210932232
NGK
NUR34321216422235522554517116
NVS
OTT121110121122513134467104541
PAF273222224245481063564412113
PAG
PEG
PHU
PPT7823333423332667125131917638
PST
QSB
RES
SBA
SFS
SHU
SIT232231121123359347910511107
SJG122111121145669235227934
SOD9151562214324446545191712181314255
SPT
STJ6733222633912818228161515146887
SUA
TAM
TAN
TDC
THL511566634348411209240316226279141414
THY1101223410642435522333123
TRW
TSU
TUC3312111111112536198337533
UPS
VAL
VIC55323222323324113313664963
VSS
WNG
YKC