3-1.     Introduction

3-2.     Definitions

3-3.     Aviation Weather Observing Locations

3-4.     General Observing Practices

3-5.     Dissemination

3-6.     Dissemination Requirements

3-7.     Corrections to Transmitted Data

3-8.     Delayed Reports

3-9.     Rounding Off Numbers

3-10.   Record Keeping and Forms

3-11.   Evaluating Weather Sensor Accuracy

3-12.   Documentation of Observing Location and Facilities

Figure 3-1.    Station Information File