SOL just rose above the 178 that I mentioned to my brothers yesterday, and the four-hour pullback is complete. Next, we need to see if 178 can hold— as long as the four-hour close doesn't drop below 178, it will continue to rise, first looking at 182, then 185, 187.
If the four-hour close falls below 178 again, then this wave of rise will end, and it will be time to pull back, at which point we'll see if 173, 171, and 169 can hold up.