| Grade Cd |
Display Nm |
| -1 |
UNSP |
| -2 |
UNUSABLE |
| 0 |
UNDEF |
| 4 |
Statistic computed from less than expected number of instantaneous values for the period |
| 50 |
DEFAULT |
| 90 |
Daily mean calculated from data on this day matches published daily mean to nearest hundredth |
| 91 |
Daily mean calculated from data on this day matches published daily mean within 1 percent |
| 92 |
Daily mean calculated from data on this day matches published daily mean within 5 percent |
| 93 |
Daily mean calculated from data on this day matches published daily mean within 10 percent |
| 99 |
Value considered correct but published daily mean value does not exist and or no comparison was made |
