@ SIL
I'm still looking at 3 May at the moment.
I'll accept, for the moment, that the Hall /Havern chart may, possibly have come from an unofficial personal weather gadget with software analysis support.
It's also possible that it's a weather chart for the local golf club in nearby Lagos (to the east of PdL, but reasonably close). However, if that were the case, wouldn't wind speed have been a useful factor for golfing aficionados? The chart shown doesn't indicate wind speed.
I have a still of the weekly chart (location undetermined) as shown on Hall's video. By happy coincidence, by stopping the video and making it fullscreen, the vertical lines between the days are around 25.2 mm in width. Assuming that the lines represent a 24-hour period from midnight to midnight - with a ruler - the hours can be calculated with a very short margin error.
So, examining the weather on that chart (with an error margin of 15-30 mins, depending on how you squint to approximate a subdivision of 1 mm):
"Hall" 's chart of undetermined location:
Thurs, 3 May
Max temp (19°C): 19-20:00
High-cloud cover: 17-20:00
The 17°C temp was from 10-14:00, then rose slightly as of 14:00 to 17.5° ish, until it rose again at around 16:00 to 18°C), then to 19°C somewhere between 19-20:00 (the bullet point denoting this is wider than 1 mm when blowing this up).
By 22:00, temp back down to 17°C and dropping further through the night.
That chart, as depicted in the video, does not provide wind speed data, just the general direction: overnight, sometime during the day and the following late night/overnight direction.
Back to Hall's narration of this with his cursor:
"On the Thursday there was about 50% cloud cover from dawn, rising to nearly 100% cloud cover by the early afternoon." @10:15-40 ish.
- What is "early afternoon"? That 3mm / 3-vertical-bar max cloud cover was from 17:00-20:00 (give or take 15 mins or so).
- "... The temperature chart shows us that the temperature on Thursday rose from a cool 13 degrees C (55 degrees Fahrenheit) in the morning, to just 17 degrees C (63 degrees Fahrenheit) around mid-day, when the photo was supposed to have been taken."
The 17°C temp plateau was from 10-14:00, then rose slightly as of 14:00 to 17.5° ish, until it rose again at around 16:00 to 18°C, then again to the day's max of 19°C somewhere around 20:00.
My first conclusion is that, wherever that chart was supposed to be located, Hall's narration is not only inaccurate, but even a visual glance shows that the alleged time of the high cloud cover does not correspond vertically to the temperature described.
- There is no visible wind speed on that chart, so comments about no visible hair movement in the "last photo" must presumably come from a different source. Which source would that have been?