{"walk":"2026-09-22","place":"Meaford, Ontario","start_clock":"17:16:39","seconds_measured":4608,"seconds_span":4613,"unit":"dBFS","method":"Per-second RMS and peak level of the camera's own audio track, from the X5 .lrv proxies, via ffmpeg astats. dB relative to full scale: 0 is the loudest the camera can record. Not calibrated sound pressure. Seconds inside a transcribed speech segment are flagged as talking and excluded from the ambient figures.","parts":[{"file":"lev-383.txt","offset":0},{"file":"lev-384.txt","offset":1798},{"file":"lev-385.txt","offset":3445}],"summary":{"rms_mean":-21,"rms_mean_se":0.2,"se_blocks":77,"rms_median":-20.2,"rms_p10":-24.3,"rms_p90":-18.1,"rms_max":-13.9,"peak_max":-1.2,"loudest_second":488,"talking_seconds":3441,"quietest_minute":63,"loudest_minute":23,"ambient":{"seconds":1167,"rms_mean":-22.7,"rms_mean_se":0.7,"se_blocks":59,"rms_median":-21.6,"rms_p10":-28.3,"rms_p90":-18.8,"rms_max":-13.9,"loudest_second":1226,"quietest_minute_median":-30.3}},"minutes":[{"minute":0,"seconds":60,"talking":51,"rms_mean":-20.5,"rms_median":-20.4,"rms_p10":-23.4,"rms_max":-16.9,"peak_max":-3.4,"ambient_mean":-22.4,"ambient_median":-21.9},{"minute":1,"seconds":60,"talking":54,"rms_mean":-21.3,"rms_median":-20.8,"rms_p10":-25,"rms_max":-17,"peak_max":-3.9,"ambient_mean":-23.1,"ambient_median":-22.8},{"minute":2,"seconds":60,"talking":57,"rms_mean":-21.8,"rms_median":-21.4,"rms_p10":-25,"rms_max":-17.9,"peak_max":-4,"ambient_mean":-25.1,"ambient_median":-24.6},{"minute":3,"seconds":60,"talking":60,"rms_mean":-20.2,"rms_median":-19.9,"rms_p10":-22.2,"rms_max":-17.5,"peak_max":-4.5,"ambient_mean":null,"ambient_median":null},{"minute":4,"seconds":60,"talking":60,"rms_mean":-19.8,"rms_median":-19.6,"rms_p10":-21.6,"rms_max":-17.3,"peak_max":-3.8,"ambient_mean":null,"ambient_median":null},{"minute":5,"seconds":60,"talking":51,"rms_mean":-19.5,"rms_median":-19.2,"rms_p10":-21.7,"rms_max":-17,"peak_max":-4.1,"ambient_mean":-21.1,"ambient_median":-21.4},{"minute":6,"seconds":60,"talking":60,"rms_mean":-19.4,"rms_median":-19.1,"rms_p10":-20.6,"rms_max":-17.1,"peak_max":-4.2,"ambient_mean":null,"ambient_median":null},{"minute":7,"seconds":60,"talking":52,"rms_mean":-18.7,"rms_median":-18.4,"rms_p10":-20.7,"rms_max":-15.6,"peak_max":-3.5,"ambient_mean":-19.4,"ambient_median":-19.1},{"minute":8,"seconds":60,"talking":49,"rms_mean":-19.7,"rms_median":-19.3,"rms_p10":-21.8,"rms_max":-14.4,"peak_max":-1.2,"ambient_mean":-22,"ambient_median":-21.1},{"minute":9,"seconds":60,"talking":60,"rms_mean":-18.7,"rms_median":-18.6,"rms_p10":-20.3,"rms_max":-16.6,"peak_max":-4,"ambient_mean":null,"ambient_median":null},{"minute":10,"seconds":60,"talking":60,"rms_mean":-18.8,"rms_median":-18.5,"rms_p10":-20.5,"rms_max":-16.5,"peak_max":-3.8,"ambient_mean":null,"ambient_median":null},{"minute":11,"seconds":60,"talking":34,"rms_mean":-19.6,"rms_median":-19.4,"rms_p10":-21.8,"rms_max":-15,"peak_max":-2.5,"ambient_mean":-20.2,"ambient_median":-20},{"minute":12,"seconds":60,"talking":16,"rms_mean":-21.4,"rms_median":-21,"rms_p10":-24.3,"rms_max":-16.1,"peak_max":-3.6,"ambient_mean":-21.9,"ambient_median":-21.9},{"minute":13,"seconds":60,"talking":21,"rms_mean":-19.6,"rms_median":-19.3,"rms_p10":-21.7,"rms_max":-17,"peak_max":-2.2,"ambient_mean":-19.5,"ambient_median":-19.7},{"minute":14,"seconds":60,"talking":5,"rms_mean":-20.4,"rms_median":-20.3,"rms_p10":-22.4,"rms_max":-17.4,"peak_max":-4.9,"ambient_mean":-20.4,"ambient_median":-20.3},{"minute":15,"seconds":60,"talking":0,"rms_mean":-21.9,"rms_median":-21.2,"rms_p10":-24.7,"rms_max":-18,"peak_max":-4.3,"ambient_mean":-21.9,"ambient_median":-21.2},{"minute":16,"seconds":60,"talking":57,"rms_mean":-19.7,"rms_median":-19.6,"rms_p10":-20.9,"rms_max":-16.6,"peak_max":-3.8,"ambient_mean":-19.8,"ambient_median":-20.2},{"minute":17,"seconds":60,"talking":57,"rms_mean":-19.9,"rms_median":-19.8,"rms_p10":-21.5,"rms_max":-15.1,"peak_max":-4.2,"ambient_mean":-20.3,"ambient_median":-19.7},{"minute":18,"seconds":60,"talking":59,"rms_mean":-20.6,"rms_median":-20.1,"rms_p10":-22.7,"rms_max":-17.8,"peak_max":-4.9,"ambient_mean":-19.4,"ambient_median":-19.4},{"minute":19,"seconds":60,"talking":57,"rms_mean":-20.4,"rms_median":-20.1,"rms_p10":-22.3,"rms_max":-14.7,"peak_max":-4.5,"ambient_mean":-20.4,"ambient_median":-20.7},{"minute":20,"seconds":60,"talking":24,"rms_mean":-19.9,"rms_median":-19.8,"rms_p10":-22.1,"rms_max":-13.9,"peak_max":-4.4,"ambient_mean":-19.9,"ambient_median":-20},{"minute":21,"seconds":60,"talking":6,"rms_mean":-20.4,"rms_median":-20.4,"rms_p10":-21.9,"rms_max":-17.1,"peak_max":-6.1,"ambient_mean":-20.4,"ambient_median":-20.4},{"minute":22,"seconds":60,"talking":23,"rms_mean":-20.1,"rms_median":-19.9,"rms_p10":-22.7,"rms_max":-14.2,"peak_max":-4.1,"ambient_mean":-19.9,"ambient_median":-19.6},{"minute":23,"seconds":60,"talking":39,"rms_mean":-19.2,"rms_median":-19.2,"rms_p10":-20.5,"rms_max":-15.2,"peak_max":-5.3,"ambient_mean":-19.3,"ambient_median":-19.3},{"minute":24,"seconds":60,"talking":25,"rms_mean":-21.4,"rms_median":-21.1,"rms_p10":-24.1,"rms_max":-17.7,"peak_max":-4.8,"ambient_mean":-22,"ambient_median":-22.1},{"minute":25,"seconds":60,"talking":9,"rms_mean":-23.4,"rms_median":-23.2,"rms_p10":-26.1,"rms_max":-18.4,"peak_max":-6.3,"ambient_mean":-23.4,"ambient_median":-23.4},{"minute":26,"seconds":60,"talking":24,"rms_mean":-23.3,"rms_median":-22.7,"rms_p10":-28.3,"rms_max":-18,"peak_max":-4.5,"ambient_mean":-25,"ambient_median":-25.4},{"minute":27,"seconds":60,"talking":30,"rms_mean":-21.6,"rms_median":-21.1,"rms_p10":-24,"rms_max":-18.2,"peak_max":-5.1,"ambient_mean":-22.6,"ambient_median":-22},{"minute":28,"seconds":60,"talking":49,"rms_mean":-20.4,"rms_median":-20,"rms_p10":-22.8,"rms_max":-16.1,"peak_max":-4.7,"ambient_mean":-22.1,"ambient_median":-22},{"minute":29,"seconds":60,"talking":42,"rms_mean":-20.5,"rms_median":-20.4,"rms_p10":-22.7,"rms_max":-17.4,"peak_max":-4.1,"ambient_mean":-21.3,"ambient_median":-20.8},{"minute":30,"seconds":60,"talking":34,"rms_mean":-20.4,"rms_median":-20.4,"rms_p10":-22.1,"rms_max":-17.5,"peak_max":-6,"ambient_mean":-20.6,"ambient_median":-20.7},{"minute":31,"seconds":60,"talking":53,"rms_mean":-19.5,"rms_median":-19.3,"rms_p10":-21.5,"rms_max":-15.8,"peak_max":-4.3,"ambient_mean":-20.6,"ambient_median":-21.1},{"minute":32,"seconds":60,"talking":51,"rms_mean":-19.8,"rms_median":-19.4,"rms_p10":-21.8,"rms_max":-15.9,"peak_max":-3.1,"ambient_mean":-20.8,"ambient_median":-20.3},{"minute":33,"seconds":60,"talking":50,"rms_mean":-20.4,"rms_median":-20.3,"rms_p10":-22.6,"rms_max":-16.8,"peak_max":-3.7,"ambient_mean":-22.6,"ambient_median":-22.5},{"minute":34,"seconds":60,"talking":37,"rms_mean":-20.7,"rms_median":-20.5,"rms_p10":-23.4,"rms_max":-18.2,"peak_max":-3.5,"ambient_mean":-21.7,"ambient_median":-21.2},{"minute":35,"seconds":60,"talking":58,"rms_mean":-20,"rms_median":-19.5,"rms_p10":-21.9,"rms_max":-17.8,"peak_max":-4.4,"ambient_mean":-23.7,"ambient_median":-23},{"minute":36,"seconds":60,"talking":59,"rms_mean":-19.9,"rms_median":-20,"rms_p10":-22,"rms_max":-16.7,"peak_max":-3.8,"ambient_mean":-20.8,"ambient_median":-20.8},{"minute":37,"seconds":60,"talking":53,"rms_mean":-19.7,"rms_median":-19.6,"rms_p10":-21.7,"rms_max":-14.6,"peak_max":-3.6,"ambient_mean":-20.5,"ambient_median":-20.8},{"minute":38,"seconds":60,"talking":60,"rms_mean":-20.1,"rms_median":-19.8,"rms_p10":-22.3,"rms_max":-16.7,"peak_max":-3.5,"ambient_mean":null,"ambient_median":null},{"minute":39,"seconds":60,"talking":60,"rms_mean":-19.3,"rms_median":-19.3,"rms_p10":-20.9,"rms_max":-16.3,"peak_max":-4.1,"ambient_mean":null,"ambient_median":null},{"minute":40,"seconds":60,"talking":11,"rms_mean":-22.2,"rms_median":-21.5,"rms_p10":-27.6,"rms_max":-17.8,"peak_max":-4.8,"ambient_mean":-22.7,"ambient_median":-22.1},{"minute":41,"seconds":60,"talking":31,"rms_mean":-21.3,"rms_median":-21.2,"rms_p10":-23.5,"rms_max":-17.7,"peak_max":-4.3,"ambient_mean":-22.4,"ambient_median":-22.7},{"minute":42,"seconds":60,"talking":20,"rms_mean":-21.4,"rms_median":-20.6,"rms_p10":-24.8,"rms_max":-16.7,"peak_max":-4.2,"ambient_mean":-21.7,"ambient_median":-20.9},{"minute":43,"seconds":60,"talking":38,"rms_mean":-21,"rms_median":-20.9,"rms_p10":-24.3,"rms_max":-16.7,"peak_max":-4.4,"ambient_mean":-22.5,"ambient_median":-22},{"minute":44,"seconds":60,"talking":40,"rms_mean":-20.1,"rms_median":-20.1,"rms_p10":-22.3,"rms_max":-16.3,"peak_max":-4.1,"ambient_mean":-21.2,"ambient_median":-20.9},{"minute":45,"seconds":60,"talking":28,"rms_mean":-20,"rms_median":-19.8,"rms_p10":-22.1,"rms_max":-16.5,"peak_max":-4.1,"ambient_mean":-20.7,"ambient_median":-20.6},{"minute":46,"seconds":60,"talking":60,"rms_mean":-19.1,"rms_median":-18.9,"rms_p10":-21,"rms_max":-16.7,"peak_max":-3.4,"ambient_mean":null,"ambient_median":null},{"minute":47,"seconds":60,"talking":32,"rms_mean":-20.5,"rms_median":-20.2,"rms_p10":-23.3,"rms_max":-16.2,"peak_max":-3.4,"ambient_mean":-21.1,"ambient_median":-20.7},{"minute":48,"seconds":60,"talking":27,"rms_mean":-20.5,"rms_median":-20.2,"rms_p10":-22.7,"rms_max":-17.6,"peak_max":-4.2,"ambient_mean":-20.9,"ambient_median":-20.9},{"minute":49,"seconds":60,"talking":48,"rms_mean":-22.3,"rms_median":-21.7,"rms_p10":-25.7,"rms_max":-17.8,"peak_max":-3.5,"ambient_mean":-24.7,"ambient_median":-23.3},{"minute":50,"seconds":60,"talking":60,"rms_mean":-21.4,"rms_median":-20.9,"rms_p10":-23.7,"rms_max":-18.2,"peak_max":-3.9,"ambient_mean":null,"ambient_median":null},{"minute":51,"seconds":60,"talking":60,"rms_mean":-20.4,"rms_median":-19.9,"rms_p10":-22.3,"rms_max":-17.5,"peak_max":-4.2,"ambient_mean":null,"ambient_median":null},{"minute":52,"seconds":60,"talking":48,"rms_mean":-21.9,"rms_median":-20.2,"rms_p10":-27.9,"rms_max":-17.1,"peak_max":-4.9,"ambient_mean":-27.5,"ambient_median":-26.4},{"minute":53,"seconds":60,"talking":59,"rms_mean":-20.4,"rms_median":-18.9,"rms_p10":-25.8,"rms_max":-15.5,"peak_max":-3.7,"ambient_mean":-33,"ambient_median":-33},{"minute":54,"seconds":60,"talking":60,"rms_mean":-19.5,"rms_median":-19,"rms_p10":-21.8,"rms_max":-16.3,"peak_max":-4.1,"ambient_mean":null,"ambient_median":null},{"minute":55,"seconds":60,"talking":55,"rms_mean":-19.5,"rms_median":-19.2,"rms_p10":-21.5,"rms_max":-16.7,"peak_max":-3.6,"ambient_mean":-22.5,"ambient_median":-22.1},{"minute":56,"seconds":60,"talking":43,"rms_mean":-20.9,"rms_median":-20.7,"rms_p10":-23.3,"rms_max":-16,"peak_max":-3.8,"ambient_mean":-22.3,"ambient_median":-21.8},{"minute":57,"seconds":55,"talking":43,"rms_mean":-21.3,"rms_median":-20.7,"rms_p10":-24.3,"rms_max":-16.2,"peak_max":-5,"ambient_mean":-24.1,"ambient_median":-22.8},{"minute":58,"seconds":60,"talking":27,"rms_mean":-25.1,"rms_median":-24.5,"rms_p10":-32.4,"rms_max":-17.6,"peak_max":-4.3,"ambient_mean":-27.3,"ambient_median":-26},{"minute":59,"seconds":60,"talking":60,"rms_mean":-20.1,"rms_median":-19.7,"rms_p10":-21.5,"rms_max":-16.5,"peak_max":-4.2,"ambient_mean":null,"ambient_median":null},{"minute":60,"seconds":60,"talking":60,"rms_mean":-20,"rms_median":-19.9,"rms_p10":-21.4,"rms_max":-17.6,"peak_max":-4.2,"ambient_mean":null,"ambient_median":null},{"minute":61,"seconds":60,"talking":60,"rms_mean":-18.8,"rms_median":-18.7,"rms_p10":-20.4,"rms_max":-16.4,"peak_max":-3.2,"ambient_mean":null,"ambient_median":null},{"minute":62,"seconds":60,"talking":58,"rms_mean":-19.2,"rms_median":-18.9,"rms_p10":-22,"rms_max":-15.3,"peak_max":-3,"ambient_mean":-22,"ambient_median":-16},{"minute":63,"seconds":60,"talking":40,"rms_mean":-25.8,"rms_median":-23.6,"rms_p10":-34.9,"rms_max":-18.3,"peak_max":-3.9,"ambient_mean":-30.6,"ambient_median":-30.3},{"minute":64,"seconds":60,"talking":44,"rms_mean":-24.8,"rms_median":-23,"rms_p10":-31.9,"rms_max":-18.7,"peak_max":-5.6,"ambient_mean":-29.9,"ambient_median":-29.1},{"minute":65,"seconds":60,"talking":33,"rms_mean":-25.7,"rms_median":-24.9,"rms_p10":-32.9,"rms_max":-17.4,"peak_max":-5,"ambient_mean":-29.3,"ambient_median":-29.7},{"minute":66,"seconds":60,"talking":50,"rms_mean":-22,"rms_median":-21,"rms_p10":-28.5,"rms_max":-16.6,"peak_max":-3.8,"ambient_mean":-25.7,"ambient_median":-24.5},{"minute":67,"seconds":60,"talking":60,"rms_mean":-20.3,"rms_median":-20.2,"rms_p10":-22,"rms_max":-17.9,"peak_max":-4.9,"ambient_mean":null,"ambient_median":null},{"minute":68,"seconds":60,"talking":58,"rms_mean":-20.9,"rms_median":-20,"rms_p10":-23,"rms_max":-17.3,"peak_max":-2.6,"ambient_mean":-34.5,"ambient_median":-30.7},{"minute":69,"seconds":60,"talking":60,"rms_mean":-20.5,"rms_median":-19.5,"rms_p10":-24,"rms_max":-16.7,"peak_max":-3.6,"ambient_mean":null,"ambient_median":null},{"minute":70,"seconds":60,"talking":44,"rms_mean":-23.1,"rms_median":-21,"rms_p10":-29.2,"rms_max":-17.9,"peak_max":-4,"ambient_mean":-27.2,"ambient_median":-26.6},{"minute":71,"seconds":60,"talking":58,"rms_mean":-22,"rms_median":-21.3,"rms_p10":-24.9,"rms_max":-18.5,"peak_max":-3.1,"ambient_mean":-31.1,"ambient_median":-30.6},{"minute":72,"seconds":60,"talking":60,"rms_mean":-22,"rms_median":-21.5,"rms_p10":-24.4,"rms_max":-19.1,"peak_max":-4.3,"ambient_mean":null,"ambient_median":null},{"minute":73,"seconds":60,"talking":31,"rms_mean":-27.8,"rms_median":-25.2,"rms_p10":-41.4,"rms_max":-16.6,"peak_max":-4.3,"ambient_mean":-31.9,"ambient_median":-29.3},{"minute":74,"seconds":60,"talking":59,"rms_mean":-23.1,"rms_median":-21.3,"rms_p10":-30.3,"rms_max":-15.6,"peak_max":-1.8,"ambient_mean":-39.3,"ambient_median":-39.3},{"minute":75,"seconds":60,"talking":57,"rms_mean":-24.1,"rms_median":-21.4,"rms_p10":-34.9,"rms_max":-17.2,"peak_max":-4.2,"ambient_mean":-48,"ambient_median":-47.3},{"minute":76,"seconds":53,"talking":53,"rms_mean":-24.2,"rms_median":-20.4,"rms_p10":-31.7,"rms_max":-17.1,"peak_max":-2.3,"ambient_mean":null,"ambient_median":null}],"vehicles_in_frame":{"method":"COCO-SSD lite_mobilenet_v2 on each fisheye circle of the 10 s frame strip, score >= 0.35. Classes kept: car, truck, bus, motorcycle, bicycle. Counts are vehicles visible in a frame, parked or moving, not passes.","frames_total":462,"frames_with_vehicles":174,"vehicles_seen_total":503,"vehicles_per_frame_mean":1.09,"per_frame":[[0,1],[10,0],[20,0],[30,0],[40,2],[50,0],[60,0],[70,0],[80,0],[90,0],[100,1],[110,0],[120,0],[130,0],[140,0],[150,0],[160,0],[170,0],[180,0],[190,0],[200,0],[210,0],[220,3],[230,0],[240,0],[250,0],[260,0],[270,2],[280,0],[290,0],[300,5],[310,1],[320,2],[330,3],[340,5],[350,2],[360,3],[370,0],[380,1],[390,3],[400,1],[410,0],[420,0],[430,0],[440,1],[450,0],[460,0],[470,6],[480,3],[490,3],[500,0],[510,0],[520,1],[530,0],[540,0],[550,0],[560,0],[570,0],[580,5],[590,3],[600,0],[610,1],[620,0],[630,4],[640,2],[650,5],[660,0],[670,1],[680,0],[690,0],[700,5],[710,3],[720,3],[730,2],[740,4],[750,0],[760,3],[770,0],[780,4],[790,3],[800,1],[810,5],[820,1],[830,2],[840,1],[850,3],[860,0],[870,0],[880,0],[890,0],[900,0],[910,0],[920,2],[930,0],[940,0],[950,0],[960,0],[970,3],[980,3],[990,0],[1000,0],[1010,0],[1020,1],[1030,2],[1040,0],[1050,0],[1060,1],[1070,1],[1080,0],[1090,0],[1100,0],[1110,0],[1120,0],[1130,0],[1140,2],[1150,0],[1160,0],[1170,0],[1180,0],[1190,0],[1200,1],[1210,6],[1220,0],[1230,0],[1240,0],[1250,1],[1260,2],[1270,0],[1280,0],[1290,0],[1300,4],[1310,1],[1320,0],[1330,0],[1340,2],[1350,0],[1360,0],[1370,1],[1380,0],[1390,0],[1400,0],[1410,0],[1420,0],[1430,0],[1440,0],[1450,0],[1460,0],[1470,0],[1480,0],[1490,0],[1500,0],[1510,2],[1520,0],[1530,1],[1540,0],[1550,0],[1560,0],[1570,0],[1580,0],[1590,0],[1600,0],[1610,0],[1620,1],[1630,1],[1640,0],[1650,0],[1660,0],[1670,0],[1680,0],[1690,3],[1700,1],[1710,0],[1720,3],[1730,4],[1740,1],[1750,0],[1760,0],[1770,1],[1780,1],[1790,0],[1798,0],[1808,0],[1818,0],[1828,0],[1838,0],[1848,0],[1858,0],[1868,0],[1878,0],[1888,1],[1898,0],[1908,1],[1918,0],[1928,0],[1938,4],[1948,6],[1958,7],[1968,5],[1978,5],[1988,7],[1998,12],[2008,9],[2018,11],[2028,2],[2038,0],[2048,0],[2058,0],[2068,0],[2078,2],[2088,1],[2098,1],[2108,4],[2118,2],[2128,2],[2138,1],[2148,7],[2158,1],[2168,3],[2178,5],[2188,0],[2198,6],[2208,5],[2218,0],[2228,0],[2238,1],[2248,0],[2258,0],[2268,0],[2278,0],[2288,0],[2298,0],[2308,0],[2318,0],[2328,0],[2338,0],[2348,1],[2358,1],[2368,10],[2378,3],[2388,7],[2398,0],[2408,0],[2418,0],[2428,0],[2438,0],[2448,0],[2458,0],[2468,0],[2478,1],[2488,4],[2498,2],[2508,1],[2518,0],[2528,0],[2538,0],[2548,0],[2558,5],[2568,11],[2578,5],[2588,12],[2598,5],[2608,8],[2618,6],[2628,0],[2638,0],[2648,0],[2658,2],[2668,3],[2678,6],[2688,5],[2698,1],[2708,0],[2718,1],[2728,0],[2738,1],[2748,2],[2758,0],[2768,0],[2778,1],[2788,0],[2798,1],[2808,0],[2818,0],[2828,0],[2838,0],[2848,0],[2858,0],[2868,1],[2878,1],[2888,0],[2898,5],[2908,3],[2918,0],[2928,0],[2938,1],[2948,3],[2958,0],[2968,0],[2978,0],[2988,0],[2998,0],[3008,0],[3018,0],[3028,0],[3038,0],[3048,0],[3058,0],[3068,0],[3078,0],[3088,0],[3098,0],[3108,0],[3118,0],[3128,0],[3138,0],[3148,1],[3158,0],[3168,0],[3178,0],[3188,0],[3198,0],[3208,0],[3218,0],[3228,0],[3238,0],[3248,4],[3258,0],[3268,0],[3278,2],[3288,0],[3298,0],[3308,0],[3318,0],[3328,1],[3338,0],[3348,1],[3358,0],[3368,0],[3378,0],[3388,0],[3398,0],[3408,0],[3418,0],[3428,0],[3438,0],[3445,1],[3455,0],[3465,0],[3475,0],[3485,0],[3495,0],[3505,0],[3515,0],[3525,0],[3535,0],[3545,2],[3555,1],[3565,1],[3575,1],[3585,0],[3595,3],[3605,0],[3615,0],[3625,0],[3635,1],[3645,1],[3655,2],[3665,2],[3675,4],[3685,3],[3695,3],[3705,1],[3715,2],[3725,2],[3735,3],[3745,1],[3755,2],[3765,1],[3775,0],[3785,0],[3795,0],[3805,1],[3815,0],[3825,0],[3835,0],[3845,0],[3855,8],[3865,0],[3875,0],[3885,0],[3895,0],[3905,8],[3915,3],[3925,15],[3935,0],[3945,0],[3955,1],[3965,0],[3975,2],[3985,1],[3995,2],[4005,1],[4015,5],[4025,2],[4035,0],[4045,0],[4055,0],[4065,1],[4075,1],[4085,0],[4095,0],[4105,2],[4115,0],[4125,0],[4135,0],[4145,1],[4155,0],[4165,0],[4175,0],[4185,1],[4195,1],[4205,0],[4215,3],[4225,0],[4235,0],[4245,0],[4255,0],[4265,0],[4275,1],[4285,0],[4295,3],[4305,0],[4315,0],[4325,0],[4335,0],[4345,0],[4355,0],[4365,0],[4375,0],[4385,0],[4395,0],[4405,0],[4415,0],[4425,0],[4435,0],[4445,0],[4455,0],[4465,0],[4475,0],[4485,0],[4495,0],[4505,1],[4515,1],[4525,0],[4535,0],[4545,0],[4555,0],[4565,0],[4575,0],[4585,0],[4595,0],[4605,0]]},"his_exclusions":{"walk":"2026-09-22","windows":{"exclude":[{"start":182.9,"end":287.2,"quote":"We're not gonna use this data. This data is not going to be used."}],"exclude_speed":[{"start":345.9,"end":426.4,"quote":"Do not take this as a measurement for speed. They are misleading you."}]},"seconds_excluded":105,"sound_street":{"with_everything":{"seconds":1167,"mean":-22.7,"median":-21.6,"p10":-28.3,"p90":-18.8,"max":-13.9},"his_exclusions_applied":{"seconds":1167,"mean":-22.7,"median":-21.6,"p10":-28.3,"p90":-18.8,"max":-13.9}},"vehicles_in_frame":{"with_everything":{"frames":462,"mean_per_frame":1.09},"his_exclusions_applied":{"frames":452,"mean_per_frame":1.1}},"note":"Speed figures in lib/walks/2026-09-22-speeds.json are computed per event; events inside an exclude_speed window are flagged there and left out of the walk's top speed."},"speed":{"status":"not measured yet","how":"full frame rate bursts around each pass, tracked across frames, scaled by vehicle length. tools/speed.mjs, needs the card mounted."},"walk_page":"/walks/2026-09-22","caveats":["Levels are dB relative to full scale, not calibrated sound pressure. Compare within this dataset, not to a sound meter.","The microphone is on a handheld camera. Seconds where the transcript has someone speaking are flagged and excluded from the street figures, but a voice can still leak into neighbouring seconds.","One walk, one evening. Not a survey of Meaford traffic."]}