Condign volumes 1 to 3

Read from the scan by GLM-OCR; expect the odd misread word.

# UNCLASSIFIED

UK RESTRICTED

medium altitude UAPs can exist in both weather patterns; although the high pressure clear conditions, rather than the misty conditions in high pressure are likely to provide the best viewing conditions. There is, nevertheless, a possibility that UAP sightings might be connected to weather patterns.

## TIME OF YEAR

6. It is instinctive to imagine a larger number of reported sightings during dusk and darkness - simply because the greatest number of reports are ones where 'lights' are seen - and this is rarely the case reported in daylight. Of course, this does not necessarily mean that there are fewer UAPs present during daylight (assuming that their occurrence is indifferent to the presence or absence of light). [Since we do not know what they are we cannot assume any attributes]. In addition to weather, it may be shown that the electrostatic and electromagnetic nature of the atmosphere correlates with sightings ( see Working Papers No. 1, 2 and 10). It is known that sightings occur in the vicinity of volcanic activity possibly connected with the presence of electrical charges caused by particle friction in the dust which is present and its velocity. The potential connection between UAP and ball lightning are summarised at Working Paper No 2.

## TIME OF DAY

7. Although a time-of-day connection with UAP reports is inevitable because of the relative daylight and darkness viewing conditions for 'lights' in the sky, the actual occurrence of the total of these phenomena, within the atmosphere at any given time may not be time-dependent. One must not fall into the trap of assuming that the presence of unexplained objects in the atmosphere (or in near space) is necessarily connected to our world measurement cycle of time or that the rate of occurrence is somehow connected to the routine of life. As this study only involves sightings within the UK's airspace, this investigation will not be in a position to

correlate UK sightings with successive sightings (if they were reported or even if they were present) in Europe or over Ireland, in the Atlantic, North Sea or Bay of Biscay. However, if there is shown to be a cycle of sightings, we shall have no other option than to measure it in terms of time as we know it. If, for example, this (to our eyes) appears to recur at regular intervals, the problem will then be to fit this time period to a meaningful pattern, perhaps sidereal. It may, of course, be shown not to fit any known pattern (e.g. celestial, seasonal, etc).

## LOCATION

8. It is sometimes claimed that UAP sightings are more likely to occur in some locations than others. Apart from the volcanic connection, claimed by some observers (clearly not applicable to UKADGE), it has been suggested that the location list at the database (Table UAP-2, Volume 1) may be connected with sightings. Before useful statistical work can be done on locations, the following must be considered for a rigorous analysis to be made:

(a) The location of a sighting is often given crudely. A 'place name', 'near a place', 'between two places', 'out to sea off xxxx', 'on holiday near xxxx'. The address of the witness may not be the location of the sighting.

(b) Lat/Long co-ordinates and Grid References are rare (but could be generated approximately from most of the witness reports).

(c) Post codes might be a good method.

(d) Plots (maps) of the following are required in electronic form:

- National Grid/Local Power lines down to main sub-station level

- Airfields - Civil

- Airfields - Military/Experimental Establishments

Air corridors