Statistics popup

The numeric statistics popup now reports the full column profile — missing count & %, distinct values, the quartiles (Q1 / median / Q3), and a mini histogram of the distribution — all computed over the visible rows. Apply a filter and the open popup recomputes live; a column with no numeric values shows a tidy empty state instead of an error.

Try it

Click GS, then the # lozenge on the Reading column header. The popup shows the new figures and a histogram of a right-skewed distribution (a handful of large readings).
Note Missing — three readings are blank. The percentage is over every cell seen, blanks included.
Filter Reading (the ▽ lozenge) to a sub-range and reopen the popup: every figure recomputes over just the matching rows.

Reaction readings

Sample	Reading	Batch
S-01	12	A
S-02	14	A
S-03	11	B
S-04	15	A
S-05		B
S-06	13	A
S-07	88	C
S-08	16	B
S-09	12	A
S-10		C
S-11	14	B
S-12	95	C
S-13	13	A
S-14		B

Spec: specs/014-navigation-and-analysis/ · No runtime dependencies · Works offline (file://).