| Beta: |
Early release products for users to gain familiarity with data formats and
parameters. |
| Provisional: |
Limited comparisons with independent sources have been made and obvious
artifacts fixed. |
| Validated Stage 1: |
Uncertainties are estimated from independent measurements at selected
locations and times. |
| Validated Stage 2: |
Uncertainties are estimated from more widely distributed independent
measurements. |
| Validated Stage 3: |
Uncertainties are estimated from independent measurements representing
global conditions. |
