CAHABA VALLEY CREEK AT Cahaba Valley Creek (Pelham)

Ranking Statistics

247 score95.6of 100

Alabama median

95.6the median score of 798 stations

Scoring higher

394stations in Alabama

Sharing its score

23ranks 395 to 417

Points deducted

4.42.3 arrival, 1.7 reports received, 0.5 forecast check

Counted at the median

Accuracy, instrument checks, forecast checknot measured at this station; Alabama median 100.0, 100.0, 95.4

Next above

WILA1rank 399; ahead on reports received 98.2% against 95.2%

Next below

TOIrank 417; behind on reports received 95.2% against 90.6%

Sharing its rank

2other stations, equal on every measure

Equal scores are ordered by the share of scheduled reports received, then the reports due in the week (the longer record first), then the median arrival, then the longest silence.

1. Reports receivedweight 3595.233.3 of 35 pointsAlabama median 98.8160 of 168 scheduled reports received in 7 days
2. Arrivalweight 1077.17.7 of 10 pointsAlabama median 87.5half its reports arrived within 21 min
3. Continuityweight 10100.010.0 of 10 pointsAlabama median 100.0longest silence 2 h, on a schedule of one report every 60 min
4. Accuracyweight 20-20.0 of 20 points, at the medianAlabama median 100.0-
5. Instrument checksweight 15-15.0 of 15 points, at the medianAlabama median 100.0-
6. Forecast checkweight 10-9.5 of 10 points, at the medianAlabama median 95.4-

The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.