Station report
Mississippi River At Aitkin, 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 1,183 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.66 inHg and the temperature at 54.8 F.
Section from sea level of where Mississippi River At Aitkin stands in the atmosphere, height to scale: the station 1,183 feet above sea level with 4 per cent of the air below it; the standard atmosphere's pressure there, 28.66 inches of mercury, and temperature, 54.8 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 05227500 FIG. D WHERE MISSISSIPPI RIVER AT AITKIN 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 MISSISSIPPI RIVER AT AITKIN 4 PER CENT OF THE AIR BELOW IT 1,183 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 28.66 inHg STANDARD TEMPERATURE HERE 54.8 F TITLE Mississippi River At Aitkin, the column STATION REPORT · DCP 05227500 TYPE SECTION SCALE HEIGHT TO SCALE REV FROM THE REGISTER SHEET 1 of 3 DATE 2026-10-11 ID SR-05227500-1 DRAWN AS linework on paper SOURCES FB-ENG-001, FB-ENG-003 On Oct 11 the noon sun stands 36 degrees above the horizon at 46.54 N, and the day is 10 h 58 min long. Level ground there takes 59 per cent of the noon sunlight a surface facing the sun would.
Elevation of the noon sun at Mississippi River At Aitkin, angles true: on Oct 11 it stands 36 degrees above the horizon, against 67 at the June solstice, 43 at the equinoxes and 20 at the December solstice; the day is 10 h 58 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 05227500 FIG. E THE SUN AT MISSISSIPPI RIVER AT AITKIN 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 67° EQUINOXES 43° DECEMBER SOLSTICE 20° OCT 11, 36° SOUTH ANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLY DAY LENGTH 10 H 58 MIN LEVEL GROUND TAKES 59 PER CENT OF THE NOON SUN A FACING SURFACE WOULD LATITUDE 46.54 N; THE SUN'S DECLINATION -7.2° TITLE Mississippi River At Aitkin, the sun STATION REPORT · DCP 05227500 TYPE ELEVATION SCALE ANGLES TRUE REV FROM THE REGISTER SHEET 2 of 3 DATE 2026-10-11 ID SR-05227500-2 DRAWN AS linework on paper SOURCES FB-ENG-007 A data collection platform, 1,183 ft above sea level. Its sensors, as its network builds them.
Elevation of a data collection platform, Mississippi River At Aitkin, 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 05227500 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 Mississippi River At Aitkin, the instrument STATION REPORT · DCP 05227500 TYPE ELEVATION SCALE SCHEMATIC REV FROM THE REGISTER SHEET 3 of 3 DATE 2026-10-11 ID SR-05227500-3 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