Station report
Pearl River Navigation Canal Lock and Dam No. 2, 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 19 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.90 inHg and the temperature at 58.9 F.
Section from sea level of where Pearl River Navigation Canal Lock and Dam No. 2 stands in the atmosphere, height to scale: the station 19 feet above sea level with 0 per cent of the air below it; the standard atmosphere's pressure there, 29.90 inches of mercury, and temperature, 58.9 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 02492100 FIG. D WHERE PEARL RIVER NAVIGATION CANAL LOCK AND DAM NO. 2 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 PEARL RIVER NAVIGATION CANAL LOCK AND DAM NO. 2 0 PER CENT OF THE AIR BELOW IT 19 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 29.90 inHg STANDARD TEMPERATURE HERE 58.9 F TITLE Pearl River Navigation Canal Lock and Dam No. 2, the column STATION REPORT · DCP 02492100 TYPE SECTION SCALE HEIGHT TO SCALE REV FROM THE REGISTER SHEET 1 of 3 DATE 2026-10-16 ID SR-02492100-1 DRAWN AS linework on paper SOURCES FB-ENG-001, FB-ENG-003 On Oct 16 the noon sun stands 50 degrees above the horizon at 30.59 N, and the day is 11 h 17 min long. Level ground there takes 77 per cent of the noon sunlight a surface facing the sun would.
Elevation of the noon sun at Pearl River Navigation Canal Lock and Dam No. 2, angles true: on Oct 16 it stands 50 degrees above the horizon, against 83 at the June solstice, 59 at the equinoxes and 36 at the December solstice; the day is 11 h 17 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 02492100 FIG. E THE SUN AT PEARL RIVER NAVIGATION CANAL LOCK AND DAM NO. 2 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 83° EQUINOXES 59° DECEMBER SOLSTICE 36° OCT 16, 50° SOUTH ANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLY DAY LENGTH 11 H 17 MIN LEVEL GROUND TAKES 77 PER CENT OF THE NOON SUN A FACING SURFACE WOULD LATITUDE 30.59 N; THE SUN'S DECLINATION -9.1° TITLE Pearl River Navigation Canal Lock and Dam No. 2, the sun STATION REPORT · DCP 02492100 TYPE ELEVATION SCALE ANGLES TRUE REV FROM THE REGISTER SHEET 2 of 3 DATE 2026-10-16 ID SR-02492100-2 DRAWN AS linework on paper SOURCES FB-ENG-007 A data collection platform, 19 ft above sea level. Its sensors, as its network builds them.
Elevation of a data collection platform, Pearl River Navigation Canal Lock and Dam No. 2, 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 02492100 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 Pearl River Navigation Canal Lock and Dam No. 2, the instrument STATION REPORT · DCP 02492100 TYPE ELEVATION SCALE SCHEMATIC REV FROM THE REGISTER SHEET 3 of 3 DATE 2026-10-16 ID SR-02492100-3 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