Solar—Appears to operate on approximately a 27 day cycle which suggests it’s value should be around 50 on day 384. However this has risen to anomalously high values recently (The supernova being a star may be the cause), so there is a risk it may not behave as predicted in the immediate future. Lunar—Seems to go through a pattern of relative highs and lows that repeat every 27-28 days, probably not coincentally the same as the orbital period of the moon. On day 356-357 lunar was at a relatively high value of 46 − 39, so this looks like a good prospect. Ocean—Can be very strong, but also very weak at times with no obvious pattern. Breeze - Has never been more than 20 or less than 6. This is unlikely to be good enough. Flame—Can be anywhere between 11 and 41 with no obvious pattern Ash—Is consistently ⇐ 10 , so should probably be avoided Earth—Another one that can easily be very high or low with no obvious pattern. Void—Highly erratic osscillations between 17 and 30, Doom—The qualitative pattern seems to repeat itself once every 8 days, suggesting it’s value on day 384 will be about 30. Spite—Is 0 about half the time. It takes on a high value regularly once every 28 days though. The last time this happened was on day 369 which is no good for us. On other days it is either 0 or a relatively low value, so this is one to avoid. Looking at the ones that seem reasonably predictable Solar + Lunar should yield over 90 so this should be a good prospect, providing the supernova doesn’t unexpectedly disrupt things. Lunar + Doom is another possibility, however unless the supernove disrupts things it has a lower expected value.
On balance I think Solar + Lunar looks like the best bet.