This data set was created from examining several ice cores drilled at Antarctica's Vostok Station in 2001. Examine the data and write about one correlation that you see. What does the correlation tell you about Earth’s historic atmosphere or climate? (ybp = years before present, ppb = parts per billion, and ppm = parts per million)

Depth (m) Age (ybp) Methane (ppb) Carbon Dioxide (ppm) Temperature Change from Current (°C)
355.765 9169 664.7 263 0.48
362.915 9397 673.7 265.7 0.57
374.57 9761 676.3 267.6 0.64
381.715 9985 678 265.3 0.9
389.97 10248 688 264 1.08
399.215 10548 666 253.9 0.675
407.43 10820 703 245.3 0.28
415.27 11084 664.7 237.5 -0.115
427.27 11513 467.7 238.3 -0.74
434.52 11817 462.3 237.6 -0.805
445.965 12368 627 238.6 -0.51
453.77 12766 661.7 228.5 -0.475
463.565 13249 618.7 225.2 -0.82
469.72 13551 611.7 221 -1.04
484.02 14226 461 214 -1.19
491.72 14622 475.7 202.9 -1.69
501.515 15163 456 193.9 -2.28
509.18 15633 418.7 188.5 -2.235
519.84 16369 394.8 188.6 -2.16
531.18 17305 366.3 188.3 -1.92
539.465 18068 371 190 -1.82
550.465 19100 377 195 -2.35
557.72 19779 375.3 186.5 -2.89
569.68 20891 353.7 185.7 -3.13