Measurement: PM2.5 is a term for fine particulate matter pollution. PM2.5 is primarily a problem in the wintertime in the Bay Area, when wood burning constitutes the major source. Daily AQI Measurements Each cell in this chart shows the estimated hourly (AQI) values for PM2.5. As established by the U.S. EPA, the AQI for PM2.5 is based on 24-hour concentrations, so hourly readings are only estimates. The column at far right shows the preliminary AQI value for the day, based on the 24-hour average concentration. If the number in the far right column is greater than 100, it means that PM2.5 levels were over the federal health standard.
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Values between 101 and 150 in the far right column mean that air quality was in the Unhealthy for Sensitive Groups category for the day. If the value in the far right column is greater than 150, that means air quality was in the Unhealthy category. At this time, PM2.5 measurements at the Napa Valley College location are for informational purposes only.
The Australian Competition and Consumer Commission (ACCC) says that its latest report based on wholesale market data provided by NBN Co shows positive signs for competition. As of the end of June, there were at least seven telcos purchasing capacity from NBN Co at 117 Points of Interconnect (POIs) — the previous report revealed that there were seven or more telcos at only 95 POIs. The POIs are the 121 locations — mostly Telstra exchanges — where traffic is handed off from NBN Co’s access network to telcos. At the remaining four POIs there are six telcos, the ACCC report reveals. Five providers — Aussie Broadband, Optus, Telstra, TPG and Vocus — purchased capacity at all 121 POIs. The ACCC said that Vodafone and MyRepublic are at 91 and 99 of the POIs, respectively, and the latter plans to connect to all NBN POIs in the near future. The location with the highest number of access seekers (17) is the Eastern Creek POI — the single point of interconnect for NBN satellite services.
The three fixed-line POIs with the highest number of telcos purchasing bandwidth are located in Civic in the ACT, Launceston in Tasmania and Wollongong in New South Wales Despite more telcos offering services at more locations, Telstra has maintained its dominance, the report reveals, with the company responsible for more than half of the 4.04 million fixed line and fixed wireless NBN services in operation as of 30 June. The ACCC figures are based on wholesale figures, however, so the figures from telcos such as Telstra that sell services to smaller providers don’t accurately reflect the strength of their retail arms. Read more After Telstra, TPG had the next strongest presence in the NBN market with close to 893,000 services, followed by Optus (561,000), Vocus (361,000), Aussie Broadband (51,000), and MyRepublic (26,000). The ACCC’s report also reveals that NBN Co’s as the baseline NBN product continue to bear fruit, with 1.46 million households on the speed tier. Around 400,000 end users were on 100Mbps or faster services, while 1.11 million had 25Mbps and 1.16 million 12Mbps services.
“A more than nine-fold increase in 50Mbps services so far this year shows that higher speed plans can be delivered if the incentives are right,' ACCC chairperson Rod Sims said. 'We are pleased to see retailers responding to their customers’ needs.'