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| 5areas | relating to the average values in each of five areas |
| 5points | relating to the values of five sites near the midline |
| D | pro, profile drag |
| h | horizontal |
| i | relating to one of many small wing sections |
| j | relating to one of five sections |
| L | lift |
| max | maximum |
| P | pressure |
| R | resultant |
| v | vertical |
