| Good |
- |
- |
- |
- |
- |
| Moderate |
- |
- |
- |
Aged and weak people:
avoid outdoor activities |
- |
Unhealthy
for
sensitive groups |
Asthma patients: avoid
outdoor activities |
- |
Patients with cardiovascular
ailment (e.g,. Heart attack): recommended to avoid excessive
work and outdoor activities in traffic jam areas |
Active children and
adults, patients with respiratory ailments (e.g.,. asthma):
avoid outdoor activities for a long time |
Patients with respiratory
(e.g, asthma) or cardiac ailments: avoid day-long outdoor
activities |
| Unhealthy |
Children, asthma patients,
people with cardiac or lung ailments: recommended to
avoid outdoor activities |
- |
Cardiovascular ailment
patients(e.g., Heart attack): Restrain oneself from even
normal level work, avoid traffic jam areas containing
CO in the atmosphere |
Active children and
adults, patients with respiratory ailments (e.g., asthma):
recommended to avoid day-long outdoor activities Healthy
children: avoid day-long outdoor activities Issuance
of an O₃alert |
Children, the aged,
people with cardiac or lung ailments: recommended to
avoid day-long outdoor activities General public: avoid
day-long or excessive outdoor activities |
| Very
unhealthy |
Children, asthma patients,
people with cardiac or lung ailments: avoid outdoor activities
General public: recommended to avoid outdoor activities |
Children with respiratory
ailments (e.g., asthma), adults: avoid excessive outdoor
activities |
Patients with cardiovascular
ailment (. e.g., Heart attack): Restrain oneself from
even normal level work, restrict activities in traffic
jam areas |
Active children and
adults, patients with respiratory ailments (e.g., asthma):
prohibit outdoor activities General: restrict outdoor
activities Issuance of an O₃alert |
Patients with respiratory
ailments. (e.g., asthma), aged and weak people: restrict
outdoor activities |
| Hazardous |
Children, asthma patients,
people with cardiac or lung ailments: recommend indoor
activities only General: Restrict outdoor activities |
Children or adults with
respiratory ailments (e.g., asthma): Prohibit moderate
or excessive outdoor activities |
Patients with cardiovascular
ailment (e.g., Heart attack): prohibit even normal level
work and activities in traffic jam areas General: prohibit
excessive activities |
Everyone: prohibit outdoor
activities issuance of an acute O₃alert |
Everyone: prohibit outdoor
activities, Patients with respiratory ailments (e.g.,
asthma): indoor activities only |
