{
  "title": "Does Your Poop Schedule Take Weekends Off?",
  "collected_on": "2026-09-26",
  "local_dates": {
    "start_inclusive": "2026-08-10",
    "end_exclusive": "2026-09-21"
  },
  "methodology": {
    "local_start_inclusive": "2026-08-10",
    "local_end_exclusive": "2026-09-21",
    "population": "Registered, undeleted users with effectively world-visible entries and GPS at query time.",
    "coverage": "Coverage weeks use UTC event dates because unknown offsets cannot be assigned local dates.",
    "timing": "Recorded event time plus its saved historical UTC offset; unknown or invalid metadata excluded.",
    "qualification": "At least 10 weekday and 4 weekend observed days, with at least 3 distinct weeks in EACH group.",
    "first": "Earliest eligible recorded event per local calendar day; not necessarily the first actual bathroom visit.",
    "shift": "Each user: median weekend first-event minute minus median weekday first-event minute. Positive means later.",
    "hourly": "Within each group normalize each user to 100%, then average users equally. Hours with fewer than 10 contributors are null.",
    "sensitivity": "Only days whose earliest eligible event was submitted from 5 minutes before through 1 hour after event time; requalify users.",
    "countries": "Primary-cohort users whose eligible events ALL have one known country; event location, not nationality. Minimum 100 users.",
    "weekday_comparison": "One common cohort with >=3 observed dates for each of all seven weekdays; each day compared with that user's Tue-Fri median.",
    "uncertainty": "Approximate 95% intervals for MEAN paired differences across users; medians are descriptive, not interval endpoints.",
    "consistency": "Weekly pairs use the primary cohort with >=2 weekday and >=1 weekend observed days that week; populations may vary by week.",
    "snapshot": "Public entry and location visibility were checked during collection; historical edits during the run may affect inclusion."
  },
  "eligible_events_in_local_range": 592079,
  "users_with_eligible_events": 19469,
  "local_time_sources": {
    "coordinates": 587344,
    "client": 4735
  },
  "submission_delay": {
    "within_1h_with_5m_clock_tolerance": 566685,
    "over_1h_through_24h": 19031,
    "over_24h": 6082,
    "submitted_more_than_5m_before_event": 281
  },
  "coverage_by_utc_week": [
    {
      "week_start": "2026-08-10",
      "public_events": 112724,
      "coordinates": 94960,
      "unknown_or_invalid_local_time": 17758,
      "client": 6
    },
    {
      "week_start": "2026-08-17",
      "public_events": 111889,
      "coordinates": 96270,
      "unknown_or_invalid_local_time": 15607,
      "client": 12
    },
    {
      "week_start": "2026-08-24",
      "public_events": 109712,
      "coordinates": 97020,
      "unknown_or_invalid_local_time": 12685,
      "client": 7
    },
    {
      "week_start": "2026-08-31",
      "public_events": 108449,
      "coordinates": 98567,
      "unknown_or_invalid_local_time": 9861,
      "client": 21
    },
    {
      "week_start": "2026-09-07",
      "public_events": 108040,
      "coordinates": 100584,
      "unknown_or_invalid_local_time": 7415,
      "client": 41
    },
    {
      "week_start": "2026-09-14",
      "public_events": 106295,
      "coordinates": 100427,
      "unknown_or_invalid_local_time": 1751,
      "client": 4117
    }
  ],
  "primary_cohort": {
    "users": 11334,
    "observed_days": 337141,
    "weekend_shift": {
      "users": 11334,
      "median_minutes": 30.0,
      "mean_minutes": 26.59,
      "mean_95_percent_ci_normal_approx": [
        23.35,
        29.83
      ],
      "percent_later": 60.1,
      "percent_earlier": 39.61
    },
    "hourly": {
      "weekday": {
        "events": 378261,
        "equal_user_percent_by_hour": [
          1.7044,
          0.9914,
          0.601,
          0.4207,
          0.4486,
          0.9289,
          2.6566,
          5.0885,
          6.3462,
          7.2144,
          7.4392,
          6.8769,
          6.4714,
          6.5456,
          6.1881,
          5.7165,
          5.2485,
          4.8123,
          4.6201,
          4.5213,
          4.5019,
          4.1968,
          3.7016,
          2.759
        ]
      },
      "weekend": {
        "events": 148111,
        "equal_user_percent_by_hour": [
          1.936,
          1.2883,
          0.8315,
          0.5587,
          0.4623,
          0.592,
          1.3815,
          3.0748,
          5.1911,
          6.9895,
          7.842,
          7.731,
          7.2966,
          7.0796,
          6.5642,
          5.8537,
          5.225,
          4.8283,
          4.5578,
          4.7089,
          4.6898,
          4.4966,
          3.8347,
          2.9862
        ]
      }
    }
  },
  "promptly_submitted_days": {
    "users": 10933,
    "all_days_in_same_users": {
      "users": 10933,
      "median_minutes": 30.0,
      "mean_minutes": 26.49,
      "mean_95_percent_ci_normal_approx": [
        23.22,
        29.76
      ],
      "percent_later": 60.3,
      "percent_earlier": 39.41
    },
    "timely_days_in_same_users": {
      "users": 10933,
      "median_minutes": 30.0,
      "mean_minutes": 26.37,
      "mean_95_percent_ci_normal_approx": [
        23.03,
        29.71
      ],
      "percent_later": 60.18,
      "percent_earlier": 39.61
    }
  },
  "shift_by_week": [
    {
      "week_start": "2026-08-10",
      "weekend_shift": {
        "users": 9271,
        "median_minutes": 30.0,
        "mean_minutes": 19.48,
        "mean_95_percent_ci_normal_approx": [
          12.98,
          25.99
        ],
        "percent_later": 55.67,
        "percent_earlier": 44.17
      }
    },
    {
      "week_start": "2026-08-17",
      "weekend_shift": {
        "users": 9499,
        "median_minutes": 27.0,
        "mean_minutes": 22.95,
        "mean_95_percent_ci_normal_approx": [
          16.65,
          29.25
        ],
        "percent_later": 55.38,
        "percent_earlier": 44.5
      }
    },
    {
      "week_start": "2026-08-24",
      "weekend_shift": {
        "users": 9618,
        "median_minutes": 29.5,
        "mean_minutes": 18.73,
        "mean_95_percent_ci_normal_approx": [
          12.49,
          24.97
        ],
        "percent_later": 55.53,
        "percent_earlier": 44.33
      }
    },
    {
      "week_start": "2026-08-31",
      "weekend_shift": {
        "users": 9696,
        "median_minutes": 34.5,
        "mean_minutes": 22.94,
        "mean_95_percent_ci_normal_approx": [
          16.73,
          29.14
        ],
        "percent_later": 56.11,
        "percent_earlier": 43.77
      }
    },
    {
      "week_start": "2026-09-07",
      "weekend_shift": {
        "users": 9740,
        "median_minutes": 35.25,
        "mean_minutes": 24.53,
        "mean_95_percent_ci_normal_approx": [
          18.3,
          30.76
        ],
        "percent_later": 56.34,
        "percent_earlier": 43.5
      }
    },
    {
      "week_start": "2026-09-14",
      "weekend_shift": {
        "users": 9494,
        "median_minutes": 36.0,
        "mean_minutes": 23.53,
        "mean_95_percent_ci_normal_approx": [
          17.29,
          29.76
        ],
        "percent_later": 56.67,
        "percent_earlier": 43.27
      }
    }
  ],
  "day_vs_tuesday_friday": {
    "Monday": {
      "users": 6262,
      "median_minutes": 5.5,
      "mean_minutes": 11.44,
      "mean_95_percent_ci_normal_approx": [
        7.3,
        15.59
      ],
      "percent_later": 52.81,
      "percent_earlier": 46.9
    },
    "Tuesday": {
      "users": 6262,
      "median_minutes": 0.0,
      "mean_minutes": 12.83,
      "mean_95_percent_ci_normal_approx": [
        9.52,
        16.13
      ],
      "percent_later": 49.81,
      "percent_earlier": 46.6
    },
    "Wednesday": {
      "users": 6262,
      "median_minutes": 0.0,
      "mean_minutes": 9.27,
      "mean_95_percent_ci_normal_approx": [
        6.03,
        12.51
      ],
      "percent_later": 48.99,
      "percent_earlier": 47.14
    },
    "Thursday": {
      "users": 6262,
      "median_minutes": 0.0,
      "mean_minutes": 9.17,
      "mean_95_percent_ci_normal_approx": [
        5.91,
        12.43
      ],
      "percent_later": 48.37,
      "percent_earlier": 47.64
    },
    "Friday": {
      "users": 6262,
      "median_minutes": 0.0,
      "mean_minutes": 5.98,
      "mean_95_percent_ci_normal_approx": [
        2.6,
        9.36
      ],
      "percent_later": 48.32,
      "percent_earlier": 47.99
    },
    "Saturday": {
      "users": 6262,
      "median_minutes": 31.0,
      "mean_minutes": 29.49,
      "mean_95_percent_ci_normal_approx": [
        24.9,
        34.08
      ],
      "percent_later": 60.48,
      "percent_earlier": 39.27
    },
    "Sunday": {
      "users": 6262,
      "median_minutes": 43.5,
      "mean_minutes": 40.03,
      "mean_95_percent_ci_normal_approx": [
        35.36,
        44.69
      ],
      "percent_later": 63.27,
      "percent_earlier": 36.47
    }
  },
  "country_shifts": {
    "Australia": {
      "users": 215,
      "median_minutes": 21.0,
      "mean_minutes": 30.65,
      "mean_95_percent_ci_normal_approx": [
        8.55,
        52.76
      ],
      "percent_later": 58.6,
      "percent_earlier": 40.93
    },
    "Canada": {
      "users": 434,
      "median_minutes": 17.25,
      "mean_minutes": 16.78,
      "mean_95_percent_ci_normal_approx": [
        -1.57,
        35.13
      ],
      "percent_later": 55.76,
      "percent_earlier": 44.24
    },
    "France": {
      "users": 966,
      "median_minutes": 36.25,
      "mean_minutes": 29.6,
      "mean_95_percent_ci_normal_approx": [
        18.68,
        40.52
      ],
      "percent_later": 61.08,
      "percent_earlier": 38.61
    },
    "Indonesia": {
      "users": 159,
      "median_minutes": 34.0,
      "mean_minutes": 48.95,
      "mean_95_percent_ci_normal_approx": [
        20.55,
        77.35
      ],
      "percent_later": 60.38,
      "percent_earlier": 38.99
    },
    "Italy": {
      "users": 139,
      "median_minutes": 6.5,
      "mean_minutes": 12.09,
      "mean_95_percent_ci_normal_approx": [
        -18.4,
        42.58
      ],
      "percent_later": 55.4,
      "percent_earlier": 43.17
    },
    "Netherlands": {
      "users": 132,
      "median_minutes": 27.0,
      "mean_minutes": 12.47,
      "mean_95_percent_ci_normal_approx": [
        -15.7,
        40.65
      ],
      "percent_later": 56.82,
      "percent_earlier": 42.42
    },
    "Spain": {
      "users": 129,
      "median_minutes": 40.5,
      "mean_minutes": 31.19,
      "mean_95_percent_ci_normal_approx": [
        1.99,
        60.39
      ],
      "percent_later": 62.79,
      "percent_earlier": 37.21
    },
    "United Kingdom": {
      "users": 445,
      "median_minutes": 35.5,
      "mean_minutes": 24.51,
      "mean_95_percent_ci_normal_approx": [
        7.96,
        41.05
      ],
      "percent_later": 60.22,
      "percent_earlier": 39.78
    },
    "United States": {
      "users": 4997,
      "median_minutes": 31.0,
      "mean_minutes": 28.16,
      "mean_95_percent_ci_normal_approx": [
        23.27,
        33.05
      ],
      "percent_later": 60.16,
      "percent_earlier": 39.54
    }
  },
  "countries_below_minimum": 85
}