{ "document_id": 16846, "page": 33, "width_pt": 613.44, "height_pt": 792, "rotation": 0, "pipeline_version": "paddleocr-vl-1.6+paul-48", "engine": "paddleocr_vl", "source_run_id": 16955, "item_count": 91, "counts_by_type": { "figure": 15, "footer": 1, "heading": 12, "table": 1, "table_cell": 20, "text": 41, "title": 1 }, "build_ms": 12, "items": [ { "id": "p33.1", "order": 1, "type": "title", "bbox": { "l": 83.04, "t": 721.92, "r": 364.08, "b": 670.32 }, "text": "WHY dB(A) ALONE CAN HIDE DATA CENTER NOISE", "attrs": { "block_label": "doc_title" }, "level": 2 }, { "id": "p33.2", "order": 2, "type": "text", "bbox": { "l": 82.8, "t": 670.56, "r": 327.84, "b": 656.4 }, "text": "Measure the Full Sound. Measure in dB(C)." }, { "id": "p33.3", "order": 3, "type": "text", "bbox": { "l": 81.84, "t": 651.6, "r": 353.52, "b": 625.68 }, "text": "Data centers produce large amounts of low-frequency sound from cooling fans, chillers, transformers, and generators. Standard dB(A) measurements greatly underestimate this energy and the impacts it can have on nearby communities." }, { "id": "p33.4", "order": 4, "type": "figure", "bbox": { "l": 365.52, "t": 719.52, "r": 515.04, "b": 627.6 }, "text": "", "attrs": { "block_label": "image" }, "children": [ { "id": "p33.4.1", "order": 5, "type": "text", "bbox": { "l": 370.32, "t": 673.92, "r": 508.08, "b": 663.84 }, "text": "
" }, { "id": "p33.4.2", "order": 6, "type": "text", "bbox": { "l": 362.16, "t": 648.24, "r": 514.32, "b": 627.36 }, "text": "1" } ] }, { "id": "p33.5", "order": 7, "type": "heading", "bbox": { "l": 84, "t": 621.6, "r": 256.32, "b": 603.12 }, "text": "1. MEASURED DATA CENTER NOISE SPECTRUM Cooling Fan Dominated Facility", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.6", "order": 8, "type": "text", "bbox": { "l": 92.88, "t": 600.48, "r": 292.08, "b": 584.4 }, "text": "One third octave band measurements taken at a data center property line show strong low-frequency energy. A-weighting suppresses these frequencies." }, { "id": "p33.7", "order": 9, "type": "figure", "bbox": { "l": 82.56, "t": 580.56, "r": 293.28, "b": 456.96 }, "text": "", "attrs": { "kind": "chart", "block_label": "chart" } }, { "id": "p33.8", "order": 10, "type": "text", "bbox": { "l": 84, "t": 450.72, "r": 289.2, "b": 431.28 }, "text": "A weighting reduces the measured level of the 118 Hz Inn tone by -20-25 dB. This is why dB(A) readings can appear \"quot\" when the hum is clearly audible." }, { "id": "p33.9", "order": 11, "type": "text", "bbox": { "l": 80.88, "t": 428.64, "r": 283.92, "b": 409.2 }, "text": "Source: HVGC Engineering. \"Analysis: Adding Sample Low-Frequency Trend Analysis to dBx.\"\nHVC Tech Note, 2021. Measured at a data center with cooling temperature.\nhttps://en.com/index-cs-lev-v்டا.zh-tw/addng-sample-low-frequency-tond-analysis-to-db/" }, { "id": "p33.10", "order": 12, "type": "heading", "bbox": { "l": 81.36, "t": 400.8, "r": 292.32, "b": 390.24 }, "text": "4. A-WEIGHTING STRONOLY ATTENUATES LOW FREQUENCIES", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.11", "order": 13, "type": "text", "bbox": { "l": 80.88, "t": 387.84, "r": 289.92, "b": 371.76 }, "text": "Weighting curves from IEC 61672 show how dB(A) discounts low frequencies compared with d0(C). At 31.6 Hz, A-weighting is +36 d0 lower than C-weighting." }, { "id": "p33.12", "order": 14, "type": "text", "bbox": { "l": 148.56, "t": 370.32, "r": 234.48, "b": 362.64 }, "text": "Weighting Difference (C - A)" }, { "id": "p33.13", "order": 15, "type": "table", "bbox": { "l": 80.88, "t": 363.36, "r": 294, "b": 339.36 }, "text": "", "attrs": { "block_label": "table", "n_rows": 2, "n_cols": 10, "integrity": { "skipped": "no_text_layer" } }, "children": [ { "id": "p33.13.1", "order": 16, "type": "table_cell", "bbox": { "l": 80.88, "t": 363.36, "r": 102.192, "b": 351.36 }, "text": "Frequency (Hz)", "attrs": { "row": 0, "col": 0, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.2", "order": 17, "type": "table_cell", "bbox": { "l": 102.192, "t": 363.36, "r": 123.504, "b": 351.36 }, "text": "51.5", "attrs": { "row": 0, "col": 1, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.3", "order": 18, "type": "table_cell", "bbox": { "l": 123.504, "t": 363.36, "r": 144.816, "b": 351.36 }, "text": "63", "attrs": { "row": 0, "col": 2, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.4", "order": 19, "type": "table_cell", "bbox": { "l": 144.816, "t": 363.36, "r": 166.128, "b": 351.36 }, "text": "125", "attrs": { "row": 0, "col": 3, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.5", "order": 20, "type": "table_cell", "bbox": { "l": 166.128, "t": 363.36, "r": 187.44, "b": 351.36 }, "text": "250", "attrs": { "row": 0, "col": 4, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.6", "order": 21, "type": "table_cell", "bbox": { "l": 187.44, "t": 363.36, "r": 208.752, "b": 351.36 }, "text": "500", "attrs": { "row": 0, "col": 5, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.7", "order": 22, "type": "table_cell", "bbox": { "l": 208.752, "t": 363.36, "r": 230.064, "b": 351.36 }, "text": "1k", "attrs": { "row": 0, "col": 6, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.8", "order": 23, "type": "table_cell", "bbox": { "l": 230.064, "t": 363.36, "r": 251.376, "b": 351.36 }, "text": "2k", "attrs": { "row": 0, "col": 7, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.9", "order": 24, "type": "table_cell", "bbox": { "l": 251.376, "t": 363.36, "r": 272.688, "b": 351.36 }, "text": "4k", "attrs": { "row": 0, "col": 8, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.10", "order": 25, "type": "table_cell", "bbox": { "l": 272.688, "t": 363.36, "r": 294, "b": 351.36 }, "text": "8k", "attrs": { "row": 0, "col": 9, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.11", "order": 26, "type": "table_cell", "bbox": { "l": 80.88, "t": 351.36, "r": 102.192, "b": 339.36 }, "text": "C minus A (dB)", "attrs": { "row": 1, "col": 0, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.12", "order": 27, "type": "table_cell", "bbox": { "l": 102.192, "t": 351.36, "r": 123.504, "b": 339.36 }, "text": "36", "attrs": { "row": 1, "col": 1, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.13", "order": 28, "type": "table_cell", "bbox": { "l": 123.504, "t": 351.36, "r": 144.816, "b": 339.36 }, "text": "26", "attrs": { "row": 1, "col": 2, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.14", "order": 29, "type": "table_cell", "bbox": { "l": 144.816, "t": 351.36, "r": 166.128, "b": 339.36 }, "text": "16", "attrs": { "row": 1, "col": 3, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.15", "order": 30, "type": "table_cell", "bbox": { "l": 166.128, "t": 351.36, "r": 187.44, "b": 339.36 }, "text": "9", "attrs": { "row": 1, "col": 4, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.16", "order": 31, "type": "table_cell", "bbox": { "l": 187.44, "t": 351.36, "r": 208.752, "b": 339.36 }, "text": "3", "attrs": { "row": 1, "col": 5, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.17", "order": 32, "type": "table_cell", "bbox": { "l": 208.752, "t": 351.36, "r": 230.064, "b": 339.36 }, "text": "0", "attrs": { "row": 1, "col": 6, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.18", "order": 33, "type": "table_cell", "bbox": { "l": 230.064, "t": 351.36, "r": 251.376, "b": 339.36 }, "text": "-1", "attrs": { "row": 1, "col": 7, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.19", "order": 34, "type": "table_cell", "bbox": { "l": 251.376, "t": 351.36, "r": 272.688, "b": 339.36 }, "text": "+1", "attrs": { "row": 1, "col": 8, "rowspan": 1, "colspan": 1 } }, { "id": "p33.13.20", "order": 35, "type": "table_cell", "bbox": { "l": 272.688, "t": 351.36, "r": 294, "b": 339.36 }, "text": "+1", "attrs": { "row": 1, "col": 9, "rowspan": 1, "colspan": 1 } } ] }, { "id": "p33.14", "order": 36, "type": "figure", "bbox": { "l": 87.84, "t": 338.4, "r": 92.88, "b": 330.48 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.15", "order": 37, "type": "text", "bbox": { "l": 208.8, "t": 333.6, "r": 276.24, "b": 317.52 }, "text": "Mid & High Frequencies\n(Title or No Reduction)" }, { "id": "p33.16", "order": 38, "type": "text", "bbox": { "l": 90.96, "t": 332.16, "r": 173.28, "b": 318 }, "text": "Low Frequencies\n(Nearly Reduced by Avalighting)" }, { "id": "p33.17", "order": 39, "type": "text", "bbox": { "l": 80.4, "t": 316.32, "r": 286.56, "b": 302.16 }, "text": "Source: IEC 61672-2013. Electricity could be used to provide constituents. Table values counted from standard A and C weighting curves." }, { "id": "p33.18", "order": 40, "type": "heading", "bbox": { "l": 108.72, "t": 296.88, "r": 263.52, "b": 287.04 }, "text": "5. COMMON DATA CENTER NOISE SOURCES", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.19", "order": 41, "type": "heading", "bbox": { "l": 81.6, "t": 284.4, "r": 114.72, "b": 276.96 }, "text": "GOOLINGANS", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.20", "order": 42, "type": "figure", "bbox": { "l": 77.52, "t": 270.72, "r": 118.08, "b": 240.48 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.21", "order": 43, "type": "heading", "bbox": { "l": 81.6, "t": 238.32, "r": 115.44, "b": 226.8 }, "text": "DOHAKH NNST\n63-75011", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.22", "order": 44, "type": "text", "bbox": { "l": 78.96, "t": 225.36, "r": 117.36, "b": 207.84 }, "text": "CHINA" }, { "id": "p33.23", "order": 45, "type": "figure", "bbox": { "l": 122.64, "t": 269.76, "r": 163.2, "b": 240.72 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.24", "order": 46, "type": "text", "bbox": { "l": 122.64, "t": 233.76, "r": 161.52, "b": 214.08 }, "text": "Based on the company\nscore\n31-230114\nTRANSFORMERS DIESEL GENERATORS COOLING TOWERS" }, { "id": "p33.25", "order": 47, "type": "text", "bbox": { "l": 166.32, "t": 284.16, "r": 295.2, "b": 276.48 }, "text": "TRANSFORMERS DESEL GENERATORS COOLING TOWERS" }, { "id": "p33.26", "order": 48, "type": "figure", "bbox": { "l": 170.16, "t": 271.68, "r": 204.48, "b": 234.48 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.27", "order": 49, "type": "text", "bbox": { "l": 165.6, "t": 231.36, "r": 208.8, "b": 212.16 }, "text": "125011c hundringstod\nund formul随\n(240 H, 340 Hz, etc.)\nEreக்கland 1805\nfor发放\n20<250 Hz\n1000000000\n112000\n31-250 ft." }, { "id": "p33.28", "order": 50, "type": "figure", "bbox": { "l": 209.76, "t": 270.24, "r": 253.92, "b": 236.16 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.29", "order": 51, "type": "text", "bbox": { "l": 214.56, "t": 230.88, "r": 250.56, "b": 211.92 }, "text": "Copyright 2024\n20<23010" }, { "id": "p33.30", "order": 52, "type": "figure", "bbox": { "l": 257.04, "t": 270.24, "r": 295.68, "b": 235.2 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.31", "order": 53, "type": "text", "bbox": { "l": 260.64, "t": 230.64, "r": 291.36, "b": 212.4 }, "text": "10000000000\n20000\n31-25014" }, { "id": "p33.32", "order": 54, "type": "text", "bbox": { "l": 79.68, "t": 205.2, "r": 277.68, "b": 190.8 }, "text": "Sources of Energy in International. \"The Data Management Solutions. In Data Companies\" Journalist News. https://energy@kinhatauniversity.com/access-of-heuristic-management-solutions/data-century\nBecause of the low-frequency energy, the same sound can measure much higher in dB(C) than in dB(A)." }, { "id": "p33.33", "order": 55, "type": "heading", "bbox": { "l": 323.04, "t": 620.88, "r": 484.08, "b": 609.84 }, "text": "2. THE SAME SOUND - TWO MEASUREMENTS", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.34", "order": 56, "type": "text", "bbox": { "l": 312.48, "t": 585.6, "r": 496.8, "b": 523.44 }, "text": "C-WEIGHTED\n(Capsules on Fingercards)\nA-WEIGHTED\nResources Low Fingercards\n70 dB(C)" }, { "id": "p33.35", "order": 57, "type": "text", "bbox": { "l": 447.12, "t": 562.32, "r": 485.04, "b": 522.96 }, "text": "50 dB(A)" }, { "id": "p33.36", "order": 58, "type": "text", "bbox": { "l": 386.4, "t": 547.44, "r": 418.8, "b": 524.16 }, "text": "The sound\ndid not\nchango.\nA-WEIGHTED\n(Refections Law Frequencies)" }, { "id": "p33.37", "order": 59, "type": "text", "bbox": { "l": 330.72, "t": 511.92, "r": 472.8, "b": 488.4 }, "text": "Difference of 20 dB\nLow-frequency sound is largely ignored by dB(A)." }, { "id": "p33.38", "order": 60, "type": "text", "bbox": { "l": 307.44, "t": 488.88, "r": 473.76, "b": 481.2 }, "text": "Source: United on one-third of the land data from INVC Engineering (2021)." }, { "id": "p33.39", "order": 61, "type": "heading", "bbox": { "l": 318.72, "t": 474.72, "r": 469.92, "b": 464.64 }, "text": "3. WHY LOW-FREQUENCY NOISE MATTEES", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.40", "order": 62, "type": "figure", "bbox": { "l": 307.44, "t": 461.52, "r": 323.76, "b": 446.4 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.41", "order": 63, "type": "text", "bbox": { "l": 326.4, "t": 459.84, "r": 483.6, "b": 444.96 }, "text": "Travel for the Low-frequency sound travels long distances with less attenuation and personal buildings more easily." }, { "id": "p33.42", "order": 64, "type": "text", "bbox": { "l": 307.44, "t": 442.32, "r": 481.68, "b": 427.2 }, "text": "Hard to block - It can pass through walls and windows and cause rattle and vibration of building components. Disturb sleep - Low-frequency noise is strongly linked to sleep disturbance and breakings." }, { "id": "p33.43", "order": 65, "type": "text", "bbox": { "l": 307.44, "t": 424.56, "r": 479.28, "b": 409.68 }, "text": "Disturbs sleep - Low-frequency noise is strongly linked to sleep disturbance and awakening." }, { "id": "p33.44", "order": 66, "type": "figure", "bbox": { "l": 307.92, "t": 406.8, "r": 323.04, "b": 393.36 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.45", "order": 67, "type": "text", "bbox": { "l": 327.84, "t": 407.04, "r": 482.64, "b": 392.16 }, "text": "Health effects - Associated with stress, headaches, lesions, irritability and cardiovascular impacts." }, { "id": "p33.46", "order": 68, "type": "figure", "bbox": { "l": 308.64, "t": 388.56, "r": 323.04, "b": 374.4 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.47", "order": 69, "type": "text", "bbox": { "l": 326.4, "t": 389.28, "r": 480.96, "b": 374.4 }, "text": "Hard to mask - Low-frequency noise is much more difficult to mask with typical background sounds." }, { "id": "p33.48", "order": 70, "type": "text", "bbox": { "l": 305.76, "t": 368.4, "r": 482.88, "b": 340.8 }, "text": "Source: World Health Organization (1999) Guidelines for Community Notes: Issuer of all (2014 Environmental Health Perspectives).\nFields, J. M. (2013) “Review of the Effects of Low Frequency Noise,” Noise & Health, 15(14), 153-159." }, { "id": "p33.49", "order": 71, "type": "heading", "bbox": { "l": 307.44, "t": 331.92, "r": 496.8, "b": 321.6 }, "text": "6. WHAT COMMUNITIES AND REGULATORS ARE DOING", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.50", "order": 72, "type": "text", "bbox": { "l": 307.2, "t": 318.72, "r": 495.84, "b": 305.04 }, "text": "Communities are adopting octave band limits to address low-frequency noise from data centers." }, { "id": "p33.51", "order": 73, "type": "text", "bbox": { "l": 318, "t": 303.36, "r": 488.64, "b": 282.48 }, "text": "The Ordinance is being updated to include overseLL bond noise standards to address concerns related to low frequency noise from data centers.\n- Prince William County, VA 2006 Ordinance Update, 2025" }, { "id": "p33.52", "order": 74, "type": "text", "bbox": { "l": 307.68, "t": 278.4, "r": 492.72, "b": 264.24 }, "text": "Industry and technological experts in ground monitoring and monitoring work" }, { "id": "p33.53", "order": 75, "type": "text", "bbox": { "l": 318.24, "t": 262.56, "r": 457.68, "b": 242.88 }, "text": "When prominent low-frequency components are present, noise measures based on A-weighting are inappropriate.*\nW14O Guidelines for Connectivity News, 1999" }, { "id": "p33.54", "order": 76, "type": "figure", "bbox": { "l": 306.24, "t": 238.56, "r": 314.4, "b": 229.92 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.55", "order": 77, "type": "heading", "bbox": { "l": 314.64, "t": 237.84, "r": 483.12, "b": 224.16 }, "text": "Technical guidance for data centers calls for octave-band analysis and C-weight-based reporting.", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.56", "order": 78, "type": "text", "bbox": { "l": 317.52, "t": 230.16, "r": 498.96, "b": 200.64 }, "text": "and C-weighted reporting.\n*Crave bond analysis allows you to identify and quantify the low-frequency components of noise that may be missed by a/a measurements.*\n- Larsen Davis, Data Center Noise Monitoring Guide, 2023" }, { "id": "p33.57", "order": 79, "type": "heading", "bbox": { "l": 195.6, "t": 186, "r": 388.08, "b": 176.4 }, "text": "7. RECOMMENDATIONS FOR FAIR NOISE ASSESSMENT", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.58", "order": 80, "type": "figure", "bbox": { "l": 82.8, "t": 172.32, "r": 115.44, "b": 139.68 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.59", "order": 81, "type": "text", "bbox": { "l": 118.32, "t": 171.36, "r": 283.68, "b": 137.28 }, "text": "MEASURE AND REPORT\nBOTH dB(A) AND dB(C)\nAt all property lines,\nday and night.\nUSE 1/3-OCTAVE\nBAND ANALYSIS\nAt minimum 20 Hz\nto 8 kHz" }, { "id": "p33.60", "order": 82, "type": "figure", "bbox": { "l": 296.16, "t": 171.84, "r": 328.56, "b": 138.72 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.61", "order": 83, "type": "heading", "bbox": { "l": 76.08, "t": 127.92, "r": 101.52, "b": 121.44 }, "text": "", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.62", "order": 84, "type": "text", "bbox": { "l": 75.6, "t": 120.48, "r": 323.28, "b": 78 }, "text": "1.厘船Whom County, VA. (1926, March 18). GO010. IIT N更新 Update Presentation.\nhttps://www.gov/news/2018-03/GO040710/0407100/Freerance/2018-03-07-0220012401202301.pdf\n2. WesterLuish Organization, (1974). Oultinfor for Coromondy Place, WHO Regional Office for Europe.\nhttps://www.gov.uk/regards/Legislation/217\n3. الرجال D瞳 (2023). Data Center Home Monitoring: Handling and Managing Low-Frequency N&C.\nhttps://www.gov.uk/data/events/news/information/news-monitoring/media-central-news-monitoring\nNIGHTTIME IMPACTS\nLow-frequency noise\nis more disturbing\nof night.\n4. 4.4.7. Kandahar, 4.4.7.1, 4.4.7.1, 4.4.7.1, 4.4.7" }, { "id": "p33.63", "order": 85, "type": "heading", "bbox": { "l": 332.64, "t": 170.88, "r": 361.2, "b": 162.72 }, "text": "EVALUATE", "attrs": { "block_label": "paragraph_title" }, "level": 3 }, { "id": "p33.64", "order": 86, "type": "text", "bbox": { "l": 331.44, "t": 164.64, "r": 389.04, "b": 129.84 }, "text": "RIGHTTIME IMPACTS\nLow-frequency noise\nis more disturbing\nat night" }, { "id": "p33.65", "order": 87, "type": "figure", "bbox": { "l": 395.04, "t": 172.32, "r": 429.12, "b": 137.76 }, "text": "", "attrs": { "block_label": "image" } }, { "id": "p33.66", "order": 88, "type": "text", "bbox": { "l": 433.68, "t": 171.12, "r": 491.52, "b": 129.36 }, "text": "CONSIDER INDOOR MEASUREMENTS\nLow-frequency noise builds up to 1000 homes." }, { "id": "p33.67", "order": 89, "type": "text", "bbox": { "l": 339.6, "t": 115.2, "r": 494.88, "b": 96 }, "text": "dB(A) is useful for many everyday sounds.\nBut for data centers, it can miss the noise that matters." }, { "id": "p33.68", "order": 90, "type": "text", "bbox": { "l": 369.6, "t": 91.44, "r": 465.12, "b": 81.12 }, "text": "Measure the full sound." }, { "id": "p33.69", "order": 91, "type": "footer", "bbox": { "l": 524.16, "t": 21.6, "r": 594.72, "b": 9.12 }, "text": "Page 33 of 113", "attrs": { "block_label": "number" } } ], "excluded_furniture": { "first": [], "last": [] } }