Drawn as the kind of place it stands at. 99 instruments in Ohio stand at one.
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Station charts
Great Miami River at Dayton Report
Rank 816 of 1,590 in Ohio, 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 score90.5of 100
Ohio median
91.4the median score of 1,590 stations
Scoring higher
815stations in Ohio
Sharing its score
3ranks 816 to 818
Points deducted
9.58.6 arrival, 1.0 forecast check
Counted at the median
Forecast checknot measured at this station; Ohio median 90.5
OWRO1rank 817; behind on reports received 100% against 83.9%
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 pointsOhio median 85.7168 of 168 scheduled reports received in 7 days
Arrivalweight 1014.41.4 of 10 pointsOhio median 90.8half its reports arrived within 53 min
Continuityweight 10100.010.0 of 10 pointsOhio median 100.0longest silence 64 min, on a schedule of one report every 60 min
Accuracyweight 20100.020.0 of 20 pointsOhio median 100.0its temperature against the airport station KDAY, 9.8 miles away, over 160 readings: typical difference 1.4 °F beyond a steady offset of +2.0 °F
Instrument checksweight 15100.015.0 of 15 pointsOhio median 100.00 of 160 readings failed their check against its reference station
Forecast checkweight 10-9.1 of 10 points, at the medianOhio median 90.5-
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 2.5 °F of its reference, typically, none beyond 9.0 °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
+1.9 °Fwarmer than the airport station KDAY, 9.8 miles away, on average over 223 readings; typical difference 2.6 °F; also compared with 1 other reference station
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%
423
90 to 99%
310
80 to 89%
267
70 to 79%
83
60 to 69%
29
50 to 59%
183
40 to 49%
91
30 to 39%
11
20 to 29%
61
10 to 19%
105
0 to 9%
27
Day
Rank
Stations ranked
Share received
Oct 16, 2026
816
1,590
100.0%
Oct 15, 2026
802
1,579
100.0%
Oct 14, 2026
790
1,568
100.0%
Oct 13, 2026
806
1,570
100.0%
Oct 12, 2026
893
1,563
86.3%
Oct 11, 2026
997
1,544
72.0%
Oct 10, 2026
1,315
1,557
57.7%
Oct 9, 2026
1,331
1,557
57.1%
Oct 8, 2026
1,422
1,597
29.1%
Oct 7, 2026
1,514
1,594
14.8%
Station report
Great Miami River at Dayton, in 3 sheets
Drawn from the register, in the manner of the Field Book, and opened beside the plates that explain each part of it.
At 699 ft above sea level, 3 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.17 inHg and the temperature at 56.5 F.
On Oct 16 the noon sun stands 41 degrees above the horizon at 39.77 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.