Station report
Ponce 4E, in 3 sheets Drawn from its report of Oct 15, 2026, 8:00 AM local time, in the manner of the Field Book, and opened beside the plates that explain each part of it.
1 The column2 The sun3 The instrumentAt 77 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.84 inHg and the temperature at 58.7 F; it reports 84.0 F, 25.3 F warmer than standard.
Section from sea level of where Ponce 4E stands in the atmosphere, height to scale: the station 77 feet above sea level with 0 per cent of the air below it; the standard atmosphere's pressure there, 29.84 inches of mercury, and temperature, 58.7 degrees Fahrenheit. 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D E E © 2026 STORM STATION 247 THE FIELD BOOK STATION REPORT POCP4 FIG. D WHERE PONCE 4E STANDS IN THE ATMOSPHERE SECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHERE FT ABOVE SEA LEVEL 0 5,000 10,000 15,000 SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERE PONCE 4E 0 PER CENT OF THE AIR BELOW IT 77 FT 10 PER CENT OF THE AIR BELOW, 2,890 FT 20 PER CENT OF THE AIR BELOW, 6,050 FT 30 PER CENT OF THE AIR BELOW, 9,540 FT 40 PER CENT OF THE AIR BELOW, 13,470 FT STANDARD PRESSURE HERE 29.84 inHg STANDARD TEMPERATURE HERE 58.7 F TEMPERATURE, REPORTED 84.0 F TITLE Ponce 4E, the column STATION REPORT · COOP POCP4 TYPE SECTION SCALE HEIGHT TO SCALE REV AS REPORTED SHEET 1 of 3 DATE 2026-10-15 ID SR-POCP4-1 DRAWN AS linework on paper SOURCES FB-ENG-001, FB-ENG-003 On Oct 15 the noon sun stands 63 degrees above the horizon at 18.03 N, and the day is 11 h 37 min long. Level ground there takes 89 per cent of the noon sunlight a surface facing the sun would.
Elevation of the noon sun at Ponce 4E, angles true: on Oct 15 it stands 63 degrees above the horizon, against 85 at the June solstice, 72 at the equinoxes and 49 at the December solstice; the day is 11 h 37 min long. 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D E E © 2026 STORM STATION 247 THE FIELD BOOK STATION REPORT POCP4 FIG. E THE SUN AT PONCE 4E ELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUE THE STATION JUNE SOLSTICE 85° EQUINOXES 72° DECEMBER SOLSTICE 49° OCT 15, 63° SOUTH ANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLY DAY LENGTH 11 H 37 MIN LEVEL GROUND TAKES 89 PER CENT OF THE NOON SUN A FACING SURFACE WOULD LATITUDE 18.03 N; THE SUN'S DECLINATION -8.7° TITLE Ponce 4E, the sun STATION REPORT · COOP POCP4 TYPE ELEVATION SCALE ANGLES TRUE REV AS REPORTED SHEET 2 of 3 DATE 2026-10-15 ID SR-POCP4-2 DRAWN AS linework on paper SOURCES FB-ENG-007 A cooperative observer's station, 77 ft above sea level. Its report of Oct 15, 2026, 8:00 AM local time is written on the sensors that made it.
Elevation of a cooperative observer's station, Ponce 4E, each sensor drawn and labelled with what it read: thermometer in its shield, 5 ft, high 92.0 f, low 74.0 f; standard 8 inch rain gauge, 0.03 in. 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D E E © 2026 STORM STATION 247 THE FIELD BOOK STATION REPORT POCP4 FIG. F THE INSTRUMENT ELEVATION OF A COOPERATIVE OBSERVER'S STATION, EACH SENSOR WITH WHAT IT READ, OCT 15, 2026, 8:00 AM LOCAL TIME THERMOMETER IN ITS SHIELD, 5 FT HIGH 92.0 F, LOW 74.0 F STANDARD 8 INCH RAIN GAUGE 0.03 IN SNOW BOARD AND MEASURING STAKE - SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALE TITLE Ponce 4E, the instrument STATION REPORT · COOP POCP4 TYPE ELEVATION SCALE SCHEMATIC REV AS REPORTED SHEET 3 of 3 DATE 2026-10-15 ID SR-POCP4-3 DRAWN AS linework on paper SOURCES FB-INS-001, FB-INS-009, FB-INS-003 
FB-ENG-001, Fig. AAtmosphere in section
FB-ENG-003, Fig. CHydrostatic balance
