Station report
Sierra Ditch Near Chacon, 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 10,400 ft above sea level, 32 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 20.26 inHg and the temperature at 21.9 F.
Section from sea level of where Sierra Ditch Near Chacon stands in the atmosphere, height to scale: the station 10,400 feet above sea level with 32 per cent of the air below it; the standard atmosphere's pressure there, 20.26 inches of mercury, and temperature, 21.9 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 07214470 FIG. D WHERE SIERRA DITCH NEAR CHACON 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 20,000 SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERE SIERRA DITCH NEAR CHACON 32 PER CENT OF THE AIR BELOW IT 10,400 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 50 PER CENT OF THE AIR BELOW, 17,970 FT STANDARD PRESSURE HERE 20.26 inHg STANDARD TEMPERATURE HERE 21.9 F TITLE Sierra Ditch Near Chacon, the column STATION REPORT · DCP 07214470 TYPE SECTION SCALE HEIGHT TO SCALE REV FROM THE REGISTER SHEET 1 of 3 DATE 2026-10-16 ID SR-07214470-1 DRAWN AS linework on paper SOURCES FB-ENG-001, FB-ENG-003 On Oct 16 the noon sun stands 45 degrees above the horizon at 36.18 N, and the day is 11 h 06 min long. Level ground there takes 70 per cent of the noon sunlight a surface facing the sun would.
Elevation of the noon sun at Sierra Ditch Near Chacon, angles true: on Oct 16 it stands 45 degrees above the horizon, against 77 at the June solstice, 54 at the equinoxes and 30 at the December solstice; the day is 11 h 06 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 07214470 FIG. E THE SUN AT SIERRA DITCH NEAR CHACON 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 77° EQUINOXES 54° DECEMBER SOLSTICE 30° OCT 16, 45° SOUTH ANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLY DAY LENGTH 11 H 06 MIN LEVEL GROUND TAKES 70 PER CENT OF THE NOON SUN A FACING SURFACE WOULD LATITUDE 36.18 N; THE SUN'S DECLINATION -9.1° TITLE Sierra Ditch Near Chacon, the sun STATION REPORT · DCP 07214470 TYPE ELEVATION SCALE ANGLES TRUE REV FROM THE REGISTER SHEET 2 of 3 DATE 2026-10-16 ID SR-07214470-2 DRAWN AS linework on paper SOURCES FB-ENG-007 A data collection platform, 10,400 ft above sea level. Its sensors, as its network builds them.
Elevation of a data collection platform, Sierra Ditch Near Chacon, 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 07214470 FIG. F THE INSTRUMENT ELEVATION OF A DATA COLLECTION PLATFORM, EACH SENSOR WITH WHAT IT READ ANTENNA, SENDING BY SATELLITE - AIR TEMPERATURE - PRECIPITATION GAUGE - SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALE TITLE Sierra Ditch Near Chacon, the instrument STATION REPORT · DCP 07214470 TYPE ELEVATION SCALE SCHEMATIC REV FROM THE REGISTER SHEET 3 of 3 DATE 2026-10-16 ID SR-07214470-3 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