onward. These show that, independently at all frequencies, the change in gradient is significant at about the 2-$\sigma$ level, and that this gradient increase is present in the MOST data and in both the scaled and the unscaled ATCA data.

[ccccccc]{} Frequency & Gradient & Intercept & Grad. ($<4050$) & Grad. ($>4050$) & Grad. change& Red. $\chi^2$\
(GHz) & ($\mu$Jy/day) & (day) & ($\mu$Jy/day) & ($\mu$Jy/day) & ($\mu$Jy/day)&\
\
0.843 & $63.1\pm 0.6$ & $1640\pm 20$ & $61.4\pm 1.0$ & $66.9\pm 2.1$ & $5.5\pm 2.3$ & 0.5\
1.4 & $40.9\pm 0.8$ & $1750\pm 50$ & $37.7\pm 1.7$ & $46.6\pm 2.4$ & $8.8\pm 2.9$ & 0.7\
2.4 & $25.2\pm 0.5$ & $1780\pm 50$ & $20.7\pm 1.2$ & $28.0\pm 1.6$ & $7.3\pm 1.9$ & 0.7\
4.8 & $15.2\pm 0.4$ & $2010\pm 55$ & $14.2\pm 0.6$ & $17.5\pm 1.2$ & $3.2\pm 1.4$ & 1.3\
8.6 & $10.6\pm 0.4$ & $2160\pm 65$ & $10.3\pm 0.8$ & $ 13.3\pm 1.7$ & $3.0\pm 1.9$ & 0.8\
\
1.4 & $41.2\pm 0.7$ & $1770\pm 45$ & $39.8\pm 2.0$ & $46.3\pm 2.0$ & $6.4\pm 2.8$ & 1.3\
2.4 & $26.0\pm 0.5$ & $1840\pm 45$ & $22.8\pm 1.5$ & $27.8\pm 1.4$ & $5.0\pm 2.0$ & 0.4\
4.8 & $15.3\pm 