ze ` uns 
TABEL 1. 
DAGGEMIDDELDEN VAN DE LUCHTDRUKKING VOLGENS DE OPTEE- 
KENINGEN VAN DEN BAROGRAAF RICHARD. 
750 mm. + 
Bivak Alkmaar. Bivakschip Arend. !) 
1909. 1910. 
Sept. | Oct. | Nov. | Dec. | Jan. Febr. | Maart. 
1 — 6.5 4.8 4.3 4.0 — 7.1 
2 — 6.2 4.0 2.1 3.9 — 5.7 
3 -- 5.6 4.4 2.9 4.0 — 6.7 
4 — 5.3 3.0 1.7 3.6 — 6.8 
5 — 5.3 3.4 0.9 2.9 7.8 7.4 
6 — 5.5 4.5 1.5 9.2 7.5 6.6 
7 — 5.3 4.3 25 2.1 7.2 6.2 
8 — (6.1) 5.6 94 1.3 7.1 6.9 
— — 5.0 3.6 13 6.8 8.9 
10 — (3.3) 5.3 4.0 2.1 6.4 9.4 
11 -- 5.5 3.1 2.2 5.9 8.9 
12 — 5.7 5.6 | (3.1) 1.6 6.2 9 
13 — 4.8 4.8 | (2.7) 1.5 6.9 | (9.3) 
14 — 3.9 4.0 | (3.6) 1.0 7.4 
15 -- 3.3 3.5 8.5 2.4 7.3 -- 
16 -- 3.5 4.2 | (3.4) 2.9 6.5 — 
17 — 4.2 4.3 3.1 1.2 1.2 — 
18 — 3.6 4.4 3.6 2.2 6.7 — 
19 -- 8.9 4.4 4.2 3.4 9.0 — 
20 — 4.3 4.8 4.5 3.8 8.2 -> 
21 5.0 | (4.3) 5.0 2.7 8.8 m 
22 (6.6) 3.1168 4.2 3.8 6.8 — 
23 6.9 | (5.4) | 43 4.6 3.0 1.4 == 
24 (6.7) 5.2 3.8 5.4 3.6 7.6 -- 
95 (7.3) 8.9 3.7 5.6 2.4 7.2 wg 
26 5 4.1 4.5 6.6 3.7 7.8 wan 
27 7.8 3.3 4.0 6.6 3.6 7.8 — 
28 6.9 40 3.6 7.1 2.3 7.0 — 
29 5.8 50 3.8 6.6 2.4 — — 
30 5.5 4.4 3.8 4.7 2.8 - SE: 
31 4.5 = (4.0) 2.6 -- -- 
Gem. | (6.8) |(47)| 44 | 40 | 26 | | (7.3) | (7.6) | 
| l) Ор dezelfde ECH als die welke in de bewerking der eerste expeditie met 
„a/b Zwaluw” aangegeve 
