{ "family": "price_rhythm", "url": "https://www.fuel-prices.eu/live/australia/western-australia/price-changes/", "markdown": "https://www.fuel-prices.eu/live/australia/western-australia/price-changes/data.md", "language": "en", "market": { "key": "australia/western-australia", "country": "Western Australia", "cc": "AU", "live_map": "https://www.fuel-prices.eu/live/australia/western-australia/" }, "window": { "d0": "2026-06-19", "d1": "2026-09-16", "days": 90 }, "built_at": "2026-09-17T01:12:27+00:00", "currency": "AUD", "method": { "series": "one price per station per day", "change": "two consecutive days with different prices, counted on the second", "max_gap_days": 3, "hour_of_day": "cannot be established" }, "headline": [ "A station in Western Australia changes its Unleaded (ULP) price 4.98 times a week on average, and a price that has just changed then holds for 1 day before the next one.", "On an ordinary day 98.4% of the stations in Western Australia change their price; on the busiest day of the window, 99.7%.", "The busiest weekday is Wednesday, with 19.8% of all changes; the quietest is Sunday, with 5.0%.", "An increase moves the price by 0.029 AUD/L on average, a cut by 0.019 AUD/L. Over the window there were 24 850 changes upward and 21 038 downward.", "Half of all the price changes of the last 67 days happened on just 25 of them.", "When Reddy Express moves, 100% of its own stations move on the same day — the price of a station in this network is not set at the station.", "Reddy Express reaches the centre of a market-wide move first in 3 of the 7 waves we measured; the rest follow at a median of 0.1 days.", "Across the window the market median went from 1.021 AUD/L to 1.413 AUD/L." ], "fuels": { "petrol": { "label": "Unleaded (ULP)", "code": "sp95", "stations": 949, "days_covered": 67, "changes": 45888, "changes_per_station_per_week": 4.978, "median_days_between_changes": 1, "by_weekday": [ { "up": 926, "down": 1439, "up_sum": 26.291, "down_sum": 24.345 }, { "up": 3988, "down": 4873, "up_sum": 47.997, "down_sum": 85.519 }, { "up": 7104, "down": 1987, "up_sum": 474.99, "down_sum": 11.36 }, { "up": 3590, "down": 4480, "up_sum": 54.099, "down_sum": 100.959 }, { "up": 3170, "down": 5022, "up_sum": 42.72, "down_sum": 89.072 }, { "up": 4582, "down": 2411, "up_sum": 42.056, "down_sum": 59.873 }, { "up": 1490, "down": 826, "up_sum": 25.84, "down_sum": 17.744 } ], "size": { "up": { "n": 24850, "mean": 0.0287, "median": 0.009, "p90": 0.105 }, "down": { "n": 21038, "mean": 0.0185, "median": 0.012, "p90": 0.042 } }, "concentration": { "days_for_half": 25, "days_total": 67, "share": 0.3731 }, "macro": { "up_days": 20, "down_days": 37, "mean_up": 0.0452, "mean_down": 0.01384, "run_up_mean": 1.33, "run_down_mean": 1.95, "first_median": 1.021, "last_median": 1.413 }, "networks": [ { "brand": "Reddy Express", "key": "REDDY EXPRESS", "stations": 83, "changes": 4353, "active_days": 57, "sync_median": 1, "per_week": 5.399, "up_share": 0.6772, "lag_median": 0.003, "first": 3, "waves": 7, "lead_lag": 0, "lead_corr": 0.663 }, { "brand": "Caltex", "key": "CALTEX", "stations": 89, "changes": 4667, "active_days": 66, "sync_median": 0.989, "per_week": 5.398, "up_share": 0.4483, "lag_median": 0.027, "first": 2, "waves": 7, "lead_lag": 0, "lead_corr": 0.974 }, { "brand": "Vibe", "key": "VIBE", "stations": 50, "changes": 2683, "active_days": 66, "sync_median": 0.97, "per_week": 5.524, "up_share": 0.6072, "lag_median": 0.054, "first": 0, "waves": 7, "lead_lag": -2, "lead_corr": 0.242 }, { "brand": "BP", "key": "BP", "stations": 195, "changes": 8965, "active_days": 65, "sync_median": 0.974, "per_week": 4.733, "up_share": 0.5096, "lag_median": 0.059, "first": 1, "waves": 7, "lead_lag": 0, "lead_corr": 0.97 }, { "brand": "EG Ampol", "key": "EG AMPOL", "stations": 35, "changes": 1831, "active_days": 65, "sync_median": 1, "per_week": 5.385, "up_share": 0.3932, "lag_median": 0.064, "first": 1, "waves": 7, "lead_lag": 0, "lead_corr": 0.971 }, { "brand": "Ampol", "key": "AMPOL", "stations": 132, "changes": 6288, "active_days": 66, "sync_median": 0.977, "per_week": 4.904, "up_share": 0.473, "lag_median": 0.067, "first": 0, "waves": 7, "lead_lag": 0, "lead_corr": 0.961 }, { "brand": "7-Eleven", "key": "7-ELEVEN", "stations": 58, "changes": 3076, "active_days": 65, "sync_median": 0.983, "per_week": 5.459, "up_share": 0.3865, "lag_median": 0.075, "first": 0, "waves": 7, "lead_lag": 0, "lead_corr": 0.929 }, { "brand": "Independent", "key": "INDEPENDENT", "stations": 73, "changes": 3152, "active_days": 63, "sync_median": 0.945, "per_week": 4.445, "up_share": 0.618, "lag_median": 0.105, "first": 0, "waves": 7, "lead_lag": 3, "lead_corr": 0.278 }, { "brand": "Liberty", "key": "LIBERTY", "stations": 46, "changes": 2061, "active_days": 65, "sync_median": 1, "per_week": 4.612, "up_share": 0.6439, "lag_median": 0.13, "first": 0, "waves": 7, "lead_lag": 1, "lead_corr": 0.485 }, { "brand": "Shell", "key": "SHELL", "stations": 42, "changes": 1913, "active_days": 62, "sync_median": 0.976, "per_week": 4.689, "up_share": 0.6529, "lag_median": 0.14, "first": 0, "waves": 7, "lead_lag": 0, "lead_corr": 0.534 } ], "hour_of_day": null }, "diesel": { "label": "Diesel", "code": "diesel", "stations": 693, "days_covered": 67, "changes": 32484, "changes_per_station_per_week": 4.825, "median_days_between_changes": 1, "by_weekday": [ { "up": 899, "down": 229, "up_sum": 28.117, "down_sum": 3.475 }, { "up": 4421, "down": 1962, "up_sum": 72.841, "down_sum": 19.435 }, { "up": 4331, "down": 2240, "up_sum": 73.643, "down_sum": 14.741 }, { "up": 3485, "down": 2374, "up_sum": 52.541, "down_sum": 20.762 }, { "up": 3194, "down": 2639, "up_sum": 57.434, "down_sum": 14.159 }, { "up": 4371, "down": 615, "up_sum": 53.768, "down_sum": 6.991 }, { "up": 1575, "down": 149, "up_sum": 31.591, "down_sum": 2.323 } ], "size": { "up": { "n": 22276, "mean": 0.0166, "median": 0.008, "p90": 0.039 }, "down": { "n": 10208, "mean": 0.008, "median": 0.004, "p90": 0.019 } }, "concentration": { "days_for_half": 25, "days_total": 67, "share": 0.3731 }, "macro": { "up_days": 47, "down_days": 10, "mean_up": 0.01057, "mean_down": 0.0034, "run_up_mean": 3.92, "run_down_mean": 1.43, "first_median": 1.167, "last_median": 1.63 }, "networks": [ { "brand": "Vibe", "key": "VIBE", "stations": 49, "changes": 2643, "active_days": 66, "sync_median": 0.959, "per_week": 5.553, "up_share": 0.6425, "lag_median": 0.0515, "first": 1, "waves": 4, "lead_lag": 0, "lead_corr": 0.632 }, { "brand": "United", "key": "UNITED", "stations": 33, "changes": 1672, "active_days": 66, "sync_median": 0.955, "per_week": 5.216, "up_share": 0.7111, "lag_median": 0.092, "first": 0, "waves": 4, "lead_lag": 0, "lead_corr": 0.68 }, { "brand": "Reddy Express", "key": "REDDY EXPRESS", "stations": 83, "changes": 4337, "active_days": 57, "sync_median": 0.976, "per_week": 5.379, "up_share": 0.784, "lag_median": 0.135, "first": 2, "waves": 4, "lead_lag": 0, "lead_corr": 0.835 }, { "brand": "BP", "key": "BP", "stations": 141, "changes": 6337, "active_days": 65, "sync_median": 0.972, "per_week": 4.627, "up_share": 0.6962, "lag_median": 0.138, "first": 0, "waves": 4, "lead_lag": 0, "lead_corr": 0.84 }, { "brand": "Ampol", "key": "AMPOL", "stations": 86, "changes": 3910, "active_days": 64, "sync_median": 0.977, "per_week": 4.68, "up_share": 0.6662, "lag_median": 0.14, "first": 1, "waves": 4, "lead_lag": 0, "lead_corr": 0.829 }, { "brand": "Liberty", "key": "LIBERTY", "stations": 46, "changes": 2127, "active_days": 65, "sync_median": 1, "per_week": 4.76, "up_share": 0.6775, "lag_median": 0.1635, "first": 0, "waves": 4, "lead_lag": 0, "lead_corr": 0.762 }, { "brand": "Independent", "key": "INDEPENDENT", "stations": 77, "changes": 3381, "active_days": 63, "sync_median": 0.948, "per_week": 4.52, "up_share": 0.6244, "lag_median": 0.16449999999999998, "first": 0, "waves": 4, "lead_lag": 0, "lead_corr": 0.55 }, { "brand": "Shell", "key": "SHELL", "stations": 40, "changes": 1803, "active_days": 64, "sync_median": 0.95, "per_week": 4.64, "up_share": 0.7083, "lag_median": 0.182, "first": 0, "waves": 4, "lead_lag": 0, "lead_corr": 0.866 } ], "hour_of_day": null } } }