CJS 67-9 Pictures taken (see CJS 67-8) were of four different groups (some groups taken twice). Setting at 3.5x 25 on the Exa camera w/ wide angle lens but no polaroid filter. No strobe necessary (much reflection of light in hole area - off rock side). Light reading = 8.5 (on light meter) ~1900 hrs - Different O2 machine used than previously Water temp. -34.2°C Air temp. -35°C O2 machine used for all Light readings Red - below seals } probe placed in middle of shelf Black - 26.3°C facing (top toward) south. O2 - 4.6 ~2000 hrs - O2 sat. = 8.4 at 33.8°C ± 7.8 at 33.6°C O2 shelf = 3.8 at 34°C ± 7.6 at 33.6°C I believe these O2 measurements to be inaccurate - probe machine would not go back to < .1 when placed in grey bottle after readings taken. Probe was left in water for ~45 min. before first reading was taken. O2 - taken by analysis of water w/ little chemistry kit. O2 = 3-4 ppm (closer to 3ppm) Observations: Males are not as dark in color as on all previous visits. In fact, many large males