Working with Natural Probabilities

"A number of potential uses are illustrated for the new format, particularly for comparing icing test exposures to ... natural probabilities of occurrence." Public Domain image from DOT/FAA/AR-00/30. 1 Introduction In DOT/FAA/AR-00/30 1 Dr. Jeck wrote of Figure 23: 3.2 COMPARING WITH NATURAL LWC PROBABILITIES. ... Figure 23 shows a set of LWC probability curves derived from about 23,000 nmi of flight data in stratiform icing conditions. Any given curve indicates the probability that randomly encountered, stratiform icing conditions will have an average LWC somewhere below the curve. For example, the 50% curve means that half of the LWC averages will lie below the curve and half will lie above it. The 90% curve means that 90% of all LWC averages can be expected to lie below it, for any given averaging distance, or horizontal extent. The sample LWC trace has been plotted on …