Figure 6 was printed incorrectly in the original publication of Goguitchaichvili et al. (2019). The correct Figure 6 is reproduced below.
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20201112234348484-0595:S0033589420000174:S0033589420000174_fig6.png?pub-status=live)
Figure 6.
The authors apologize for this error.
Published online by Cambridge University Press: 31 March 2020
Figure 6.