Vaderlandsche letteroefeningen. Jaargang 1777

[p. 84]

Waarneemingen omtrent de lugts-gesteldheid, weder en wind, te Amsteldam, in January 1777.
Door Antonius Wilhelmus Schaaf, Med. Doct.

	Barometer.			Therm.			Winds Streek.			Weder.
D.	's morg.	's midd.	's av.	mo.	mi.	av.	's morg.	's midd.	's av.	Gesteldh.
1	29.8	29.9	29.10	32	32	31	N t O	N t O	N t O	Betr.
2	-10½	-10½	-10½	29	31	32	-	O	O	- Sn.
3	-10¼	-10	-9¾	31	32	32	N O	N O	N O	-
4	-9	-8	-8	33	37	38	N W	Z W	Z W	Mist. Reg.
5	-7½	-6½	-5½	33	36	37	N t W	N t W	-	Held. Sn.
6	-5	-5½	-6	33	32	30	O	O	O	Sn. Held.
7	-5¼	-5	-4¾	27	31	31	Z W	Z W	Z W	Held. Sn.
8	-4½	-4¼	-5½	25	28	27	-	-	-	- -
9	-5½	-6½	-7	27	42	34	W t Z	W t Z	-	Betr. Sn.
10	-6¾	-	-6½	33	36	36	Z W	Z W	-	- -
11	-4	-3	-4	36	37	39	Z t O	Z	-	Mist.
12	-6	-5½	-6	38	39	40	Z W	Z W	-	- Reg.
13	-8	-8½	-7½	44	47	45	-	Z t W	Z	Reg. Wind.
14	-	-9	-9	40	44	48	Z	Z W	Z W	Held. Reg.
15	-9½	-10	-11	47	52	46	-	Z	Z	- Wolk.
16	30.0	-11½	-11½	42	46	44	Z t O	Z t O	Z t O	-
17	29.11½	30.0	30.0½	38	43	42	Z	Z	Z	- Mist.
18	30.1	-1	-1	32	38	35	-	Z O	Z O	-
19	-	-0¼	-0¼	28	33	32	O t Z	O	O	-
20	29.11½	29.10½	29.10	30	33	34	O t N	-	-	- Wolk.
21	-8½	-8¼	-8¼	33	37	35	O	-	-	- -
22	-6½	-5½	-5½	31	33	34	O t N	O t N	O t N	Sneeuw.
23	-	-7½	-8	32	35	37	N W	N W	W	- Mist.
24	-6	-6	-	36	36	36	Z O	O	N O	Mist. Betr.
25	30.0	30.2	30.3	34	35	37	N O	N O	N O	Betr.
26	-3	-	-1	33	36	37	O t N	O t N	O t N	Mist. Betr.
27	29.11½	29.10½	29.9½	36	37	36	Z O	Z O	Z O	- Sn.
28	-7½	-6½	-6½	35	39	36	Z W	Z W	N W	Sneeuw.
29	-7	-7	-7	35	37	36	N W	N W	-	Helder.
30	-	-8	-10	33	38	38	-	N	N	Sn. Held.
31	30.0	30.1	30.1½	34	36	35	N t O	N t O	N t O	Betr.

Hoogste Barometer d. 30.3	} middelb. d. 29.9
Laagste Barometer d. 29.3	} middelb. d. 29.9
Hoogste Thermometer gr. 52.	} middelb. gr. 38½
Laagste Thermometer gr. 25.	} middelb. gr. 38½