Here is my California Supercharger report from Friday, 4 November 2016:
Arrived at Tejon Ranch Supercharger at 8:15 AM. We were the only ones charging for 10 minutes when two other vehicles arrived. We departed after 25 minutes, and we saw a Tesla approaching the Supercharger. (By the way, this was the only location that delivered the expected charge for the entire session.)
Arrived at Buena Park around 10:25 AM. Two of the eight stalls were available. It was unclear how many in use were from owners and how many were for customers who had their cars serviced. Our initial charge rate (18%) on a paired stall was 60kWh +/-, which rose to 85kWh after the owner of the X in the shared stall departed. Two more owners arrived during our 30 minutes there.
Arrived at San Diego around 12:50. All 12 stalls were in use. We were the first ones in the line. Within 10 minutes three more arrived and circled the parking lot like buzzards waiting for their prey to die. Got a spot around 1:10. We charged for 20 minutes. Four more Teslas arrived in this period, and a few drove away.
Arrived at Temecula around 4:00 PM. One other car was plugged in. The initial rate with 17% battery was 115kWh, but within five minutes had plummeted to 84. We returned to the car at 5:00 PM, and there was a total of 5 Teslas charging.
Arrived at Tejon Ranch around 8:40 PM. We were the only car charging. One arrived shortly thereafter, and another arrived around 9:10.
I plugged in again at Tejon Ranch at 6:00 AM Saturday. One vehicle was charging at six o'clock, and another arrived around 6:20.
Arrived at Fresno at 9:00. One other Tesla was charging at that hour.
I think that it is a little curious that the Tejon Ranch Supercharger shows heavier-than-expected utilization early in the morning and later at night. I wonder what the occurrences are at Buttonwillow, Harris Ranch and Bakersfield-West for these same time frames.