The phrase "are between about" is not correct and does not form a coherent expression in written English.
It is unclear and lacks clarity, making it difficult to determine its intended use without additional context.
Example: "The temperatures are between about 20 and 25 degrees Celsius this week."
Alternatives: "are roughly between" or "are approximately between".
Most of the samples of this species are between about 3.0 and perhaps 2.4 million years old. A. africanus resembles A. afarensis in many respects but also shares unique features with early Homo that are not present in the more primitive A. afarensis.
Land costs alone are between about £30,000 and £60,000 per home, he says.
Typically they contain of the order of 103 molecules and are between about 4 and 10 nm in size.
Neandertals, whose fossils are between about 28,000 and 150,000 years old, had larger brain cavities on average than modern humans.
Effective shear parameters show that angles of internal friction between 30° and 50° are in part quite high in both sample subsets, and ranges of cohesion are between about 2 and 6 MPa (Boso) and 13 and >30 MPa (Shimanto).
In spite of this fairness, when the ratio of PRB is 20%, the UEs of our proposal who are between about 0.2 and 0.7 of CDF in Figure 8a have lower throughputs than no learning schemes.
"Before Hubble, the universe was known only to be between about 10 and 20 billion years old," says Mather.
The average temperature range is between about 65 °F (about 18 °C) in June and the upper 20s F (about −2 °C) in January.
It turns out that people are happier in every other environment than the urban environment, and the effect appears to be between about one and five points.
Annual precipitation recorded in the deeper valleys and surrounding plateaulike areas is between about 45 and 60 inches (1,100 and 1,500 mm).
Some of these chronicles continued until the 16th century and even later, although the peak period was between about 1100 and 1400.
