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CHAPTER 16. ENTRIES ON OBSERVATIONAL FORMS 16-1. Introduction 16-2. Entries on Meteorological Form 1M-10C (MF1M-10C) 16-3. Writing Instrument 16-4. Parenthetical Data 16-5. Missing Data 16-6. Late Observations 16-7. Corrections 16-8. Heading on Form MF1M-10C at LAWRS 16-9. Heading on Form MF1M-10C at Other Stations (NA LAWRS) 16-10. Entries on MF1M-10 by Columns 16-11. Type of Observation (Column 1) 16-12. Time of Observation (Column 2) 16-13. Wind Direction (Column 3) 16-14. Wind Speed (Column 4) 16-15. Wind Gust (Column 5) 16-16. Wind Variability (Column 6) 16-17. Surface Visibility (Column 7a) Tower Visibility (Column 7b) 16-18. Runway Visual Range (Column 8) 16-19. Present Weather (Column 9) 16-20. Sky Condition (Column 10) 16-21. Temperature (Column 11) 16-22. Dew Point Temperature (Column 12) 16-23. Altimeter Setting (Column 13) 16-24. Remarks (Column 14) 16-25. Total Sky Cover (Column 17) 16-26. Dry-Bulb Temperature (Column 19) 16-27. Wet-Bulb Temperature (Column 20) 16-28. Station Pressure (Column 22) 16-29. Observers Initials (Column 15) 16-30. Time (Column 26) 16-31. Observation Number (Column 27) 16-32.
Maximum Temperature (Column 31) and Minimum Temperature (Column 32) 16-33. Precipitation (Column 33) (NA LAWRS) 16-34. Snowfall (Column 34) (NA LAWRS) 16-35. Snow Depth (Column 35) (NA LAWRS) 16-36. Station Pressure (Column 36) (NA LAWRS) 16-37. Barograph (Column 37) (NA LAWRS) 16-38. Barograph Correction (Column 38) (NA LAWRS) 16-39. 24-Hour Maximum Temperature (Column 57) (NA LAWRS) 16-40. 24-Hour Minimum Temperature (Column 58) (NA LAWRS) 16-41. 24-Hour Precipitation (Column 59) (NA LAWRS) 16-42. 24-Hour Snowfall (Column 60) (NA LAWRS) 16-43. Snow Depth (Column 61) (NA LAWRS) 16-44. Remarks, Notes, and Miscellaneous Phenomena (Block 65) 16-45. Additional Instructions for Part-Time Stations 16-46. Hourly Wind Data 16-47. Additive Data Groups (NA LAWRS) 16-48. Tailoring MF1M-10C, Synoptic Data and Summary of the Day (NA LAWRS) 16-49. Notice of Corrections to Weather Records 16-50. Example Form
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