Two images were taken of the TEGA instrument on sol 25, before and after an attempt to open the doors of oven number 5, adjacent to oven number 4, which had been opened previously and used for the first sample. The left-hand door of oven 4 never opened properly. It now appears that neither door on oven 5 has opened properly. The doors are not motorized; they are connected to springs and latches, and should spring open completely when the latch is released. There is no mechanism within TEGA to attempt to push the doors open any further. The springs on the doors are strong enough to push the doors open even when buried under a few centimeters of soil; you can see that the left-hand door has successfully thrown off nearly all the soil that covered it. So it is unclear what is preventing the doors from opening.