Table 1.

Characteristics of photoperiod regimens and yield outcomes (floral biomass, % THC, % CBD) for C. sativa across studies (26 unique studies, including outliers).

Variables	Sample size (n)	Average	Median	Mode	Range
Duration of long day lighting (days)	29	37.1 ± 4.1	30.0	21.0	13.0–180
Floral biomass (g/plant)	31	43.1 ± 14.3	24.1	27.8	8.6–445.2
THC (%)	53	12.3 ± 1.0	14.4	15.9	0.1–26.1
CBD (%)	48	2.3 ± 0.7	0.4	0.0	0–18.8

While photoperiod switch statistics were calculated using each unique long day lighting duration within and between studies, statistics for physical and chemical yield were calculated based on all individually reported cultivars. Standard errors (SE) are presented for each average value.