Drawn as the kind of place it stands at. 108 instruments in Pennsylvania stand at one.
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Station charts
Indian Rock Dam near York Report
Rank 640 of 1,383 in Pennsylvania, Oct 16. The 247 rank orders a state's stations by their 247 score out of 100: how reliably they report, how accurate their readings are against a reference station, how their readings pass their checks, and how they stand against the forecast.
Ranking Statistics
247 score95.4of 100
Pennsylvania median
94.3the median score of 1,383 stations
Scoring higher
639stations in Pennsylvania
Sharing its score
9ranks 640 to 648
Points deducted
4.63.4 accuracy, 0.7 forecast check, 0.6 arrival
Counted at the median
Forecast checknot measured at this station; Pennsylvania median 92.9
DWNP1rank 641; behind on reports received 100% against 98.8%
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.
Reports receivedweight 35100.035.0 of 35 pointsPennsylvania median 95.8168 of 168 scheduled reports received in 7 days
Arrivalweight 1094.49.4 of 10 pointsPennsylvania median 94.8half its reports arrived within 13 min
Continuityweight 10100.010.0 of 10 pointsPennsylvania median 100.0longest silence 65 min, on a schedule of one report every 60 min
Accuracyweight 2083.216.6 of 20 pointsPennsylvania median 100.0its temperature against the airport station KTHV, 6.5 miles away, over 153 readings: typical difference 3.2 °F beyond a steady offset of +1.9 °F
Instrument checksweight 15100.015.0 of 15 pointsPennsylvania median 100.00 of 153 readings failed their check against its reference station
Forecast checkweight 10-9.3 of 10 points, at the medianPennsylvania median 92.9-
The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.
How each part is scored
Reports received
Full marks for every scheduled report received, none for none, in proportion between
Arrival
Full marks for a median arrival within 10 min, none at 60 min
Continuity
Full marks for a longest silence of 3 reports or less (3 h), none for 72 (72 h)
Accuracy
Full marks within 2.1 °F of its reference, typically, none beyond 8.7 °F
Instrument checks
Full marks for no reading failed, none for 5 per cent or more
Forecast check
Full marks within 2 °F of the forecast on average, none at 8 °F
+2.3 °Fwarmer than the airport station KTHV, 6.5 miles away, on average over 216 readings; typical difference 4.0 °F
From Storm Station's own record of every report it heard from this station.
Against its reference: each temperature this station reports is compared with the nearest airport or climate reference station that reported within half an hour, up to 15 miles away. The figure is its reading less the reference's, on average, as both were reported; the typical difference is the root mean square. The difference in height is shown where both heights are known.
Its schedule is one report every hour, 24 in 24 hours. Two reports in the same hour count as one received.
The ranking these charts were drawn from, as tables
Share of scheduled reports received
Stations
100%
400
90 to 99%
310
80 to 89%
90
70 to 79%
60
60 to 69%
122
50 to 59%
201
40 to 49%
109
30 to 39%
6
20 to 29%
43
10 to 19%
9
0 to 9%
33
Day
Rank
Stations ranked
Share received
Oct 16, 2026
640
1,383
100.0%
Oct 15, 2026
664
1,375
100.0%
Oct 14, 2026
583
1,372
100.0%
Oct 13, 2026
608
1,374
100.0%
Oct 12, 2026
765
1,368
85.7%
Oct 11, 2026
852
1,344
71.4%
Oct 10, 2026
994
1,352
57.1%
Oct 9, 2026
1,002
1,352
56.5%
Oct 8, 2026
1,235
1,356
28.5%
Oct 7, 2026
1,117
1,339
14.2%
Station report
Indian Rock Dam near York, in 2 sheets
Drawn from the register, in the manner of the Field Book, and opened beside the plates that explain each part of it.
On Oct 16 the noon sun stands 41 degrees above the horizon at 39.92 N, and the day is 10 h 59 min long. Level ground there takes 66 per cent of the noon sunlight a surface facing the sun would.