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Ozone levels

Time series of hourly ozone concentrations, ordered by the maximum value during the last 6 hours. When ozone levels reach 155 ppb (151 IMECAS) a phase I contingency is declared. Note that the units used in the charts are ppb (parts per billion) unlike the frontpage map which uses IMECA

— ozone 
BJUJul 25Jul 27Jul 29ppb050100150phase I
NEZJul 25Jul 27Jul 29ppb050100150phase I
UIZJul 25Jul 27Jul 29ppb050100150phase I
PEDJul 25Jul 27Jul 29ppb050100150phase I
CCAJul 25Jul 27Jul 29ppb050100150phase I
HGMJul 25Jul 27Jul 29ppb050100150phase I
FACJul 25Jul 27Jul 29ppb050100150phase I
IZTJul 25Jul 27Jul 29ppb050100150phase I
MGHJul 25Jul 27Jul 29ppb050100150phase I
CAMJul 25Jul 27Jul 29ppb050100150phase I
TLIJul 25Jul 27Jul 29ppb050100150phase I
MONJul 25Jul 27Jul 29ppb050100150phase I
TLAJul 25Jul 27Jul 29ppb050100150phase I
GAMJul 25Jul 27Jul 29ppb050100150phase I
LLAJul 25Jul 27Jul 29ppb050100150phase I
MPAJul 25Jul 27Jul 29ppb050100150phase I
AJMJul 25Jul 27Jul 29ppb050100150phase I
SAGJul 25Jul 27Jul 29ppb050100150phase I
XALJul 25Jul 27Jul 29ppb050100150phase I
ACOJul 25Jul 27Jul 29ppb050100150phase I
TAHJul 25Jul 27Jul 29ppb050100150phase I
VIFJul 25Jul 27Jul 29ppb050100150phase I
ATIJul 25Jul 27Jul 29ppb050100150phase I
CUTJul 25Jul 27Jul 29ppb050100150phase I
INNJul 25Jul 27Jul 29ppb050100150phase I
FARJul 25Jul 27Jul 29ppb050100150phase I
UAXJul 25Jul 27Jul 29ppb050100150phase I
MERJul 25Jul 27Jul 29ppb050100150phase I