Project Wifi Scanner: Data Scan 1

I was curious to see how much I could detect with an off the shelf setup (standard PCIe wifi card with an external 10cm antenna) running in my living room for a week. Here are the numbers so far:

Raw size: 2,077,031,816 bytes (2.0Gb) (14,991,993 lines of tcpdump data)
2019-09-11 22:21 to 2019-09-19 06:13 (approx 7 days, 7 hours and 52 minutes) 10,554 minutes
Unique MAC addresses seen: 68,298

Unfiltered raw log data. Notice the peaks at 8am and 5pm on weekdays.

There are about 146 devices permanently 'on' near to the antenna (I saw their signal consistently 10% of the scanning time which corresponds to the scan frequency at the time - I was changing channel up to 10 times a second).
30 of these 146 devices I saw 90% of the time despite channel hopping, so they were either putting out enough packets to get on the list or they are routers on multiple frequencies or just near enough to the antenna they are always heard first.

Collected MACs

Time	Average	Min	Max	Median
hourly	345	183	574	357
30-minute	251	149	447	255

MAC Activity

Time	Average	Min	Max	Median
hourly	345	183	574	357
30-minute	251	149	447	255

Wifi devices per hour

Wifi devices per 30 minutes

Wifi devices per hour (background devices removed)

Wifi devices per 30 minutes (background devices removed)

General MAC address packet count distribution

MAC addresses seen only once at all	25,318
MAC addresses seen 2-9 times	37,436
MAC addresses seen 10-99 times	4,917
MAC addresses seen 100-999 times	399
MAC addresses seen 1,000-9,999 times	119
MAC addresses seen 10,000-99,999 times	74
MAC addresses seen 100,000-999,999 times	42
MAC addresses seen 1million+ times	4

How many MAC addresses were seen in distinct periods (minutes)

MAC addresses seen 1-3 times	65,555
MAC addresses seen 4-10 times	1,585
MAC addresses seen 11-30 times	572
MAC addresses seen 31-40 times	87
MAC addresses seen 41-50 times	51
MAC addresses seen 51-70 times	64
MAC addresses seen 101-200 times	86
MAC addresses seen 201-300 times	26
MAC addresses seen 301-500 times	40
MAC addresses seen 501-998 times	40
MAC addresses seen 999+ times	146