yaharachain.com · mobile preset, simulated throttling, 3 samples per run, per-metric median · 19 runs since Jun 12
Performance, latest
37
Accessibility96
Best practices79
SEO100
Perf range, all runs7–41
Category scores
PerformanceAccessibilityBest practicesSEOCI floor (the weekly check fails below it)
Core metrics — median line, shaded = spread of the 3 samples
First Contentful Paint2.4 sLargest Contentful Paint10.2 sTotal Blocking Time3.9 sCumulative Layout Shift0.011Speed Index4.5 s
Performance on this site is bounded by upstream data latency — the largest element paints only once USGS/Dane County respond — so LCP swings run to run. TBT is Chart.js + app JS on a throttled mobile CPU. Accessibility, best practices, and SEO are stable by design; best practices sits below 100 because Microsoft Clarity sets third-party cookies.
Every run
Date
Perf
A11y
Best
SEO
FCP
LCP
TBT
CLS
Run
Sep 8
37
96
79
100
2.4 s
10.2 s
3.9 s
0.011
weekly · a39e9cc
Sep 1
36
96
79
100
3.7 s
10.0 s
3.2 s
0.011
weekly · 28f1370
Aug 25
36
96
79
100
2.0 s
10.8 s
5.3 s
0.011
weekly · efa194e
Aug 22
31
96
79
100
3.5 s
9.9 s
4.7 s
0.003
manual · 9c002f7
Aug 18
41
96
79
100
1.7 s
10.0 s
3.5 s
0.003
weekly · d7bbf45
Aug 11
40
96
75
100
2.4 s
10.4 s
1.7 s
0.011
weekly · d7bbf45
Aug 4
36
96
79
100
3.3 s
10.5 s
5.0 s
0.003
weekly · 174e150
Jul 28
38
96
79
100
2.4 s
10.2 s
3.1 s
0.003
weekly · 97c814f
Jul 21
29
96
79
100
3.6 s
12.0 s
8.3 s
0.003
weekly · 97c814f
Jul 14
34
96
79
100
3.0 s
10.1 s
4.7 s
0.021
weekly · 308db05
Jul 7
31
96
75
100
3.3 s
10.0 s
4.4 s
0.017
weekly · 97dde54
Jul 6
41
96
75
100
1.6 s
10.0 s
3.3 s
0.051
manual · 933e52e
Jun 30
33
96
75
100
3.5 s
11.6 s
5.2 s
0.017
weekly · a96186b
Jun 23
27
93
79
100
3.3 s
3.5 s
4.8 s
0.692
weekly · c4af58b
Jun 16
7
93
75
100
3.5 s
8.5 s
4.2 s
0.692
weekly · 0def58f
Jun 16
16
93
75
100
3.5 s
6.9 s
4.5 s
0.692
weekly · 0def58f
Jun 14
7
93
75
100
3.4 s
7.0 s
4.8 s
0.692
manual · 725dd85
Jun 12
25
93
79
100
3.3 s
3.8 s
1.7 s
0.692
manual · f294b56
Jun 12
23
93
79
100
3.1 s
3.5 s
4.6 s
0.692
manual · 69240c8
Source: data/lighthouse-history.json, appended by the weekly workflow. Re-render with node scripts/lighthouse-history.js html out.html.