Here comes the Pump., page-49

...plus what you get from that table is just the REE price change in the period of time between 13 Nov and 12 Feb. Most of the REE prices have indeed rebounded starting from February - they might still lower than November levels but are higher than Dec and/or Jan's.

Here, the article also suggests that "On the contrary, from the same time period (Nov 13, 2014-Feb 13, 2015) primarily due to a supply glut and limited purchases from end users, prices for Ytterbium oxide, Yttrium europium oxide, Gadolinium oxide and Europium oxide dropped 37.08%; 35.59%; 31.25% and 24.19% respectively. This said, it seems that the prices of these rare earth elements have been stabilized and might be effected by the demand for Terbium and Dysprosium.