| EC labels | |||
|---|---|---|---|
| AEROSOL | AIRBURST_SMOKE | CLOUD | CLOUD_BASE |
| CLOUD_LAYER | CLOUD_TOP | DUST | DUST_SUSPENSION |
| FOG | FOG_REGION | FOG_SIGNAL_DEVICE | HAIL |
| HIGH_CLOUD | LOCALIZED_ATM_SUSPENSION | LOW_CLOUD | LOW_CLOUD_CEILING_REGION |
| MIDDLE_CLOUD | NON_AQUEOUS_CLOUD | PLUME | PUFF |
| SMOKE | |||
http://standards.iso.org/ittf/PubliclyAvailableStandards/index.html