Table 4 Changes per year and trends of the Frost Days (FD), Summer Days (SU), and Ice Days (ID) for observed (1989–2014) and two future periods: FP1 (2026–2050) and FP2 (2051–2075), under two shared socioeconomic pathways SSP2-4.5 and SSP5-8.5.

From: Future projections of temperature-related indices in Prince Edward Island using ensemble average of three CMIP6 models

Stations		FD (days/year)					SU (days/year)					ID (days/year)
		OBS	FP1		FP2		OBS	FP1		FP2		OBS	FP1		FP2
		OBS	SSP2-4.5	SSP5-8.5	SSP2-4.5	SSP5-8.5	OBS	SSP2-4.5	SSP5-8.5	SSP2-4.5	SSP5-8.5	OBS	SSP2-4.5	SSP5-8.5	SSP2-4.5	SSP5-8.5
East Point	Observed	↓0.89^c					↑0.50^a					↓0.75
	NORESM2-MM		↓0.35	↓0.50	↓0.10	↓0.03		↑0.96^c	↑1.10^b	↑0.77	↑0.97^b		↓0.68^c	↓0.34	↓0.32^c	↓↓0.54^c
	MPI-ESM1.2-HR		↓1.08^c	↓1.00^c	↓0.00	0.60		↑1.68^a	↑1.14^a	↑0.87	↑1.30^a		↓0.55	↓0.74^c	↓0.33	↓0.17
	CanESM5		↓0.28	↓0.34	↓0.54	↓0.56		↑1.24^a	↑1.26^a	↑0.82^c	↑1.45^a		↓0.12	↓0.39^a	↓0.20	↓0.57^c
	Ensemble-Average		↓0.47	↓0.97^c	0.00	0.08		↑1.5 9^a	↑1.38^a	↑1.13^c	↑1.74^a		↓0.68	↓0.50	↓0.23	0.00
Charlottetown	Observed	↓0.56					0.00					↓0.67
	NORESM2-MM		↓0.17	↓0.58	↓0.03	↓0.26		↑0.85	↑0.21	↑0.11	↑0.49		↓0.63	↓0.32	0.00	↓0.56
	MPI-ESM1.2-HR		↓1.00^c	↓1.14^c	↓0.23	↓0.22		↑0.76	↑0.55	↑0.15	↑0.82^c		↓0.65^c	↓0.67	↓0.27	↓0.66
	CanESM5		↓0.70^c	↓0.72^c	↓0.73^c	↓0.78		↑1.19^a	↑0.75	↑0.54^a	↑1.42^a		↓0.05	↓0.50	↓0.25	↓0.57
	Ensemble-Average		↓0.83^c	↓1.00^a	↓0.50	↓0.67		↑0.62^c	↑0.75	↑0.07	↑1.28^c		↓0.50^a	↓0.46	↓0.14	↓0.33
Summerside	Observed	↓0.31					↑0.27					↓0.09
	NORESM2-MM		↓0.26	↓0.35	↓0.21	↓0.13		↑0.36	↑0.58	↑0.29	↑0.80		↓0.79	↓0.67	↓0.11	↓0.16
	MPI-ESM1.2-HR		↓0.80	↓0.57^c	↓0.39	↓0.16		↑0.87^c	↑0.73^c	↑0.20	↑1.11^a		↓0.73	↓0.75^a	↓0.33	↓0.58^c
	CanESM5		↓0.25	↓0.45	↓0.25	↓0.71		↑0.81^c	↑0.71^c	↑0.80	↑1.27^b		↓0.23	↓0.36^c	↓0.13	↓0.45
	Ensemble-Average		↓0.46	↓0.71^b	↓0.76	↓0.50		↑0.76^c	↑0.97^b	↑0.46	↑1.25^a		↓0.63^b	↓0.51^a	↓0.25	↓0.17
North Cape	Observed	↓1.12^a					↑0.50^b					↓0.28
	NORESM2-MM		↓0.28	↓0.26	↓0.08	↓0.23		↑0.34	↑0.77	↑0.12	↑1.00		↓1.00^c	↓0.69	↓0.12	↓0.27
	MPI-ESM1.2-HR		↓0.50	↓0.06	↓0.59	↓0.14		↑1.13^b	↑0.71^b	↑0.27	↑1.33^b		↓0.53	↓1.00^b	↓0.59	↓0.59
	CanESM5		↓0.26	↓0.08	↓0.38	↓0.52		↑1.00^c	↑1.00	↑0.82	↑1.42^b		↓0.22	↓0.48^a	↓0.26	↓0.32
	Ensemble-Average		0.10	↓0.22	0.00	0.00		↑1.03^c	↑1.19^a	↑0.22	↑1.14^c		↓0.65	↓0.53^a	↓0.12	↓0.36

↑ Increasing trend, ↓ Decreasing trend, ^aSignificant at 0.001 level (99.9%); ^bSignificant at 0.01 level (99%); ^cSignificant at 0.05 level (95%).

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Table 4 Changes per year and trends of the Frost Days (FD), Summer Days (SU), and Ice Days (ID) for observed (1989–2014) and two future periods: FP1 (2026–2050) and FP2 (2051–2075), under two shared socioeconomic pathways SSP2-4.5 and SSP5-8.5.

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