Station report
Citizen station E9109, 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.
1 The column2 The sun3 The instrumentAt 1,259 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.58 inHg and the temperature at 54.5 F.
Section from sea level of where Citizen station E9109 stands in the atmosphere, height to scale: the station 1,259 feet above sea level with 4 per cent of the air below it; the standard atmosphere's pressure there, 28.58 inches of mercury, and temperature, 54.5 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 E9109 FIG. D WHERE CITIZEN STATION E9109 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 CITIZEN STATION E9109 4 PER CENT OF THE AIR BELOW IT 1,259 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 28.58 inHg STANDARD TEMPERATURE HERE 54.5 F TITLE Citizen station E9109, the column STATION REPORT · CWOP E9109 TYPE SECTION SCALE HEIGHT TO SCALE REV FROM THE REGISTER SHEET 1 of 3 DATE 2026-10-04 ID SR-E9109-1 DRAWN AS linework on paper SOURCES FB-ENG-001, FB-ENG-003 On Oct 4 the noon sun stands 40 degrees above the horizon at 45.73 N, and the day is 11 h 22 min long. Level ground there takes 64 per cent of the noon sunlight a surface facing the sun would.
Elevation of the noon sun at Citizen station E9109, angles true: on Oct 4 it stands 40 degrees above the horizon, against 68 at the June solstice, 44 at the equinoxes and 21 at the December solstice; the day is 11 h 22 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 E9109 FIG. E THE SUN AT CITIZEN STATION E9109 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 68° EQUINOXES 44° DECEMBER SOLSTICE 21° OCT 4, 40° SOUTH ANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLY DAY LENGTH 11 H 22 MIN LEVEL GROUND TAKES 64 PER CENT OF THE NOON SUN A FACING SURFACE WOULD LATITUDE 45.73 N; THE SUN'S DECLINATION -4.6° TITLE Citizen station E9109, the sun STATION REPORT · CWOP E9109 TYPE ELEVATION SCALE ANGLES TRUE REV FROM THE REGISTER SHEET 2 of 3 DATE 2026-10-04 ID SR-E9109-2 DRAWN AS linework on paper SOURCES FB-ENG-007 A weather instrument, 1,259 ft above sea level. Its sensors, as its network builds them.
Elevation of the instrument, Citizen station E9109, each sensor drawn and labelled with what it read: no reading in the last day. 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 E9109 FIG. F THE INSTRUMENT ELEVATION OF THE INSTRUMENT, EACH SENSOR WITH WHAT IT READ ANTENNA, SENDING BY SATELLITE - AIR TEMPERATURE - PRECIPITATION GAUGE - SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALE TITLE Citizen station E9109, the instrument STATION REPORT · CWOP E9109 TYPE ELEVATION SCALE SCHEMATIC REV FROM THE REGISTER SHEET 3 of 3 DATE 2026-10-04 ID SR-E9109-3 DRAWN AS linework on paper SOURCES FB-INS-001 
FB-ENG-001, Fig. AAtmosphere in section
FB-ENG-003, Fig. CHydrostatic balance
FB-ENG-007, Fig. ARadiation budget
FB-INS-001, Fig. AWhat an instrument is