Figure 4 (continued). Q. Core 164-997A-55P released 5600 mL of gas (~5455 mL of CH₄) at 0ºC over 126 min, and 6380 mL of gas (~6235 mL of CH₄) at less than ~15ºC over a total time of 561 min. This core should have had CH₄ hydrate even after equilibration of gas with borehole water in the outer chamber. R. Core 164-997B-10P released 5125 mL of gas (~4995 mL of CH₄) at less than ~15ºC over a total time of 342 min. At 0ºC, this core should have had CH₄ hydrate even after equilibration of gas with borehole water in the outer chamber. However, Core 164-995B-10P was not at 0ºC when the first gas was released. Because expected volume-pressure relationships of gas release depend on temperature (Fig. 3), there are synthetic volume-pressure plots for 0º and 5ºC. S. Core 164-997B-15P released 3080 mL of gas (~3040 mL of CH₄) at 0ºC over 294 min, and 3190 mL of gas (~3150 mL of CH₄) at less than ~15ºC over a total time of 344 min. T. Core 164-997B-21P released 3115 mL of gas (~2945 mL of CH₄) at 0ºC over 84 min, and 3455 mL of gas (~3285 mL of CH₄) at less than ~15ºC over a total time of 160 min.