{
  "step": 255000,
  "stats": {
    "climbmix/blocks": 9180000,
    "climbmix/targets": 15346078422,
    "climbmix/input_tokens": 15347051076,
    "ultra_qa/blocks": 3442500,
    "ultra_qa/targets": 5615917971,
    "ultra_qa/input_tokens": 5615928771,
    "cortex/blocks": 3442500,
    "cortex/targets": 130960799,
    "cortex/input_tokens": 5472030778,
    "ultra_style/blocks": 3442500,
    "ultra_style/targets": 5445625285,
    "ultra_style/input_tokens": 5445910748,
    "openmath/blocks": 2295000,
    "openmath/targets": 3546217432,
    "openmath/input_tokens": 3547399641,
    "rewrite6/blocks": 1147500,
    "rewrite6/targets": 1881142352,
    "rewrite6/input_tokens": 1883204831
  },
  "sources": {
    "climbmix": {
      "page": 1257,
      "row": 595,
      "start": {
        "file": 60,
        "reader": {
          "format": "parquet-row-v1",
          "row_group": 70,
          "row": 1024
        }
      },
      "epoch": 0,
      "offset": 2048,
      "documents": 5149267
    },
    "rewrite6": {
      "page": 15,
      "row": 1160,
      "start": {
        "file": 0,
        "reader": {
          "format": "jsonl-row-v1",
          "row": 61440
        }
      },
      "epoch": 14,
      "offset": 0,
      "documents": 2938256
    },
    "openmath": {
      "page": 785,
      "row": 3990,
      "start": {
        "file": 7,
        "reader": {
          "format": "parquet-row-v1",
          "row_group": 158,
          "row": 810
        }
      },
      "epoch": 0,
      "offset": 0,
      "documents": 3219350
    },
    "ultra_qa": {
      "page": 339,
      "row": 3105,
      "start": {
        "file": 2,
        "reader": {
          "format": "parquet-row-v1",
          "row_group": 5,
          "row": 26318
        }
      },
      "epoch": 0,
      "offset": 2048,
      "documents": 1391649
    },
    "ultra_style": {
      "page": 518,
      "row": 2074,
      "start": {
        "file": 3,
        "reader": {
          "format": "parquet-row-v1",
          "row_group": 0,
          "row": 66900
        }
      },
      "epoch": 0,
      "offset": 2048,
      "documents": 2123802
    },
    "cortex": {
      "page": 66763,
      "row": 12,
      "start": null,
      "epoch": 0,
      "offset": 0,
      "documents": 8545676
    }
  }
}