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Date / Local time		T	Po	P	Pa	U	DD	Ff	ff10	ff3	N	WW	W1	W2	Tn	Tx	Cl	Nh	H	Cm	Ch	VV	Td	RRR	tR	E	Tg	E'	sss
2025 December 18, Thursday	20	-16.5 2	658.1 25.91 877.39 877.39	756.7 29.79 1008.85 1008.85	0.9 0.04 1.2 1.2	84	Calm, no wind	Calm			no clouds no clouds no clouds					-9.3 15							-18.6 -1
	17	-13.8 7	657.2 25.87 876.19 876.19	754.6 29.71 1006.05 1006.05	-0.8 -0.03 -1.07 -1.07	80	Wind blowing from the west	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			60%. 6/10. 5 oktas						Cumulus humilis or Cumulus fractus other than of bad weather, or both.	10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0	1000-1500 3281-4921	Altocumulus translucidus or opacus in two or more layers, or Altocumulus opacus in a single layer, not progressively invading the sky, or Altocumulus with Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	20.0 12.4	-16.5 2
	14	-9.8 14	658.0 25.91 877.26 877.26	754.0 29.69 1005.25 1005.25	-2.7 -0.11 -3.6 -3.6	72	Calm, no wind	Calm			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas						No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	2500 or more, or no clouds. 8202 or more, or no clouds.	Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels.	No Cirrus, Cirrocumulus or Cirrostratus.	20.0 12.4	-13.9 7
	11	-13.0 9	660.7 26.01 880.86 880.86	758.3 29.85 1010.98 1010.98	-2.1 -0.08 -2.8 -2.8	82	Calm, no wind	Calm			100%. 10/10. 8 oktas						No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	100%. 10/10. 8 oktas	2500 or more, or no clouds. 8202 or more, or no clouds.	Altostratus translucidus.		20.0 12.4	-15.5 4
	08	-16.8 2	662.8 26.09 883.66 883.66	762.3 30.01 1016.32 1016.32	-1.9 -0.07 -2.53 -2.53	84	Calm, no wind	Calm			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas				-19.7 -3		No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	2500 or more, or no clouds. 8202 or more, or no clouds.	Altocumulus translucidus or opacus in two or more layers, or Altocumulus opacus in a single layer, not progressively invading the sky, or Altocumulus with Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	20.0 12.4	-18.9 -2					Uneven layer of compact or wet snow covering ground completely.	3 1.2
	05	-19.6 -3	664.7 26.17 886.19 886.19	765.7 30.15 1020.85 1020.85	-2.6 -0.1 -3.47 -3.47	81	Wind blowing from the north-northeast	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			40%. 4/10. 3 oktas						No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	no clouds no clouds no clouds	2500 or more, or no clouds. 8202 or more, or no clouds.	No Altocumulus, Altostratus or Nimbostratus.	Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.		-22.0 -8
	02	-19.4 -3	667.3 26.27 889.66 889.66	768.5 30.26 1024.58 1024.58	-1.2 -0.05 -1.6 -1.6	83	Calm, no wind	Calm			no clouds no clouds no clouds												-21.6 -7
December 17, Wednesday	23	-17.9 -0	668.5 26.32 891.26 891.26	769.3 30.29 1025.65 1025.65	-1.0 -0.04 -1.33 -1.33	82	Wind blowing from the west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0						No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	no clouds no clouds no clouds	2500 or more, or no clouds. 8202 or more, or no clouds.	No Altocumulus, Altostratus or Nimbostratus.	Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole.		-20.2 -4
December 17, Wednesday	20	-15.8 4	669.5 26.36 892.59 892.59	769.6 30.3 1026.05 1026.05	0.1 0 0.13 0.13	83	Wind blowing from the west-northwest	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			40%. 4/10. 3 oktas					-9.6 15	No Stratocumulus, Stratus, Cumulus or Cumulonimbus.	40%. 4/10. 3 oktas	2500 or more, or no clouds. 8202 or more, or no clouds.	Altocumulus translucidus at a single level.	No Cirrus, Cirrocumulus or Cirrostratus.		-18.0 -0