Loaded 100,411 citation events

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1. DOMAIN CATEGORY BREAKDOWN BY TIER
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Tier       UGC/Social   Academic/Gov    Publisher/Other    Unknown      TOTAL
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Tier 1     1,148 (16%)       188 (3%)        5,644 (81%)     0 (0%)      6,980
Tier 2        441 (6%)       167 (2%)        7,392 (92%)     0 (0%)      8,000
Tier 3        412 (5%)       169 (2%)        7,678 (93%)     0 (0%)      8,259
Tier 4    13,904 (20%)     1,287 (2%)       55,013 (78%)     0 (0%)     70,204
Tier 5          0 (0%)         9 (1%)          932 (99%)     0 (0%)        941

AGGREGATE: Top 30 (Tier 1-3) vs Deep (Tier 4+)
  Top 30 (Tier 1-3): total 23,239
    ugc_social           2,001  (8.6%)
    academic_gov           524  (2.3%)
    publisher_other     20,714  (89.1%)
    unknown                  0  (0.0%)
  Deep (Tier 4+): total 71,145
    ugc_social          13,904  (19.5%)
    academic_gov         1,296  (1.8%)
    publisher_other     55,945  (78.6%)
    unknown                  0  (0.0%)

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2. PER-PLATFORM TIER 4+ BEHAVIOR
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Platform           Tier 1     Tier 2     Tier 3     Tier 4     Tier 5  % Tier 4+
chatgpt             1,255      1,432      1,773     20,457        546      82.5%
claude                439        574        596      3,326         44      67.7%
google_ai           2,871      3,183      3,432     31,582        193      77.0%
perplexity          2,415      2,811      2,458     14,839        158      66.1%

Domain categories within each platform's Tier 4+ citations:
Platform         UGC/Social %   Academic/Gov %    Publisher %    Total Tier 4+
chatgpt                 16.3%             2.8%          80.9%           21,003
claude                   0.6%             0.2%          99.2%            3,370
google_ai               21.5%             1.6%          76.9%           31,775
perplexity              24.3%             1.2%          74.5%           14,997

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3. PER-VERTICAL TIER 4+ RATES
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Vertical                         Total events   Tier 4+ events  % Tier 4+
Pet                                     2,259            1,862      82.4%
E-commerce                              5,888            4,725      80.2%
Consumer Electronics                    2,432            1,926      79.2%
Automotive                              3,791            3,002      79.2%
SaaS / B2B                             18,227           14,220      78.0%
Technology                              7,307            5,560      76.1%
Finance                                 8,069            6,079      75.3%
Home & Home Improvement                 7,375            5,553      75.3%
Education                               6,790            5,095      75.0%
Beauty & Personal Care                  9,984            7,354      73.7%
Fitness & Sports                        5,256            3,869      73.6%
Legal                                   4,167            2,918      70.0%
Health & Wellness                       7,425            5,196      70.0%
Food & Cooking                          5,414            3,786      69.9%

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4. CROSS-PLATFORM AGREEMENT WITHIN A QUERY
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Queries cited by 2+ platforms: 1,789
  All platforms cite same tier: 679 (38%)
  Some top-30, some Tier 4+:    620 (35%)
  Other tier spread:            490 (27%)

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5. REDDIT DEEP DIVE
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Total Reddit citations: 8,554
Unique Reddit URLs: 5,408
Mean citations per Reddit URL: 1.58
Reddit URLs cited just once: 3,992 (74%)
Reddit URLs cited 5+ times:  195

Top 15 subreddits by citation count:
    r/skincareaddiction                     210
    r/languagelearning                      154
    r/mealkits                              136
    r/ecommerce                             126
    r/smallbusiness                         112
    r/cooking                               107
    r/mattress                               97
    r/personalfinance                        96
    r/learnprogramming                       94
    r/investingforbeginners                  87
    r/dogfood                                86
    r/asianbeauty                            84
    r/hellofresh                             84
    r/ppc                                    79
    r/dogs                                   76
Unique subreddits: 1,246

Reddit citations by tier:
    Tier 1: 1,045 (12%)
    Tier 2: 126 (1%)
    Tier 3: 61 (1%)
    Tier 4: 7,181 (84%)

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6. YOUTUBE DEEP DIVE
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Total YouTube citations: 4,455
Unique YouTube URLs: 3,154
YouTube URLs cited just once: 2,559 (81%)
YouTube URLs cited 5+ times:  86
YouTube citations by tier:
    Tier 1: 28 (1%)
    Tier 2: 102 (2%)
    Tier 3: 219 (5%)
    Tier 4: 4,093 (92%)

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7. TIER 4 PROVENANCE: SERP-pool match vs site:URL lookup
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Pre-reg distinction (�4.3): Tier 4 in-pool (rank 31-100, in our top-100 SERP pull)
vs 'ranked but >100' (site:URL confirms indexed; not in our top-100).
  site_lookup                63,489 (90.4%)
  serp_pool_match             6,096 (8.7%)
  site_lookup_indexed           619 (0.9%)

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8. PAGE-FEATURE PROFILE: cited Tier 4+ vs cited Tier 1-3 (corrected features)
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With page features available: top-30 cited n=19,348, deep cited n=54,634

Feature                   Top-30 cited (mean / median)     Deep cited (mean / median)      
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stats_density             mean=    8.95 / med=  5.95 (p90=  19.7)  mean=    9.88 / med=  6.12 (p90= 22.73)
heading_density           mean=   11.76 / med=  8.08 (p90= 20.46)  mean=   12.81 / med=  8.24 (p90=  22.2)
comparison_signals        mean=    1.13 / med= 0.282 (p90= 3.169)  mean=    0.99 / med=   0.0 (p90= 2.701)
primary_source_score      mean=   -4.21 / med=-2.6469 (p90=14.8602)  mean=   -4.97 / med=-2.4774 (p90=17.9172)
schema_presence           mean=    1.06 / med=     1 (p90=     2)  mean=    0.96 / med=     1 (p90=     2)
list_structure            mean=    1.20 / med=   0.0 (p90=  4.09)  mean=    1.55 / med=   0.0 (p90=  4.92)
word_count                mean= 3194.87 / med=  2556 (p90=  6534)  mean= 2537.91 / med=  2015 (p90=  5225)

Flag                      Top-30 cited %         Deep cited %          
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has_canonical               90.8%  (17,568)         82.8%  (45,244)
has_meta_description        90.2%  (17,455)         81.8%  (44,673)
has_author_attribution      53.4%  (10,333)         54.1%  (29,576)
has_date_signal             61.6%  (11,910)         63.7%  (34,790)
has_paywall_signals          7.5%  (1,452)          4.8%  (2,646)

=== EXPLORATION COMPLETE ===
