Royal Observatory, Hongkong

Height above M.S.L.: 109 ft

Year: 1912

Month: September

Longitude: 7° 36′ 41.8″ E

Latitude: 22° 18′ 13.2″ N

Daily Meteorological Observations

Means

Barometer: 29.723, 29.693, 29.727

Air Temperature: 77.6, 83.4, 78.8 (Max 85.5, Min 75.5)

Vapour Tension: 0.724

Relative Humidity: 71%

Wind: 8.6, 13.0, 10.0 (mean 5.3)

Total Rainfall: 3.880 in

Wind, Cloud, Rainfall & Remarks

Note: Days 1–13 and 26 have incomplete data due to OCR corruption. Barometer, humidity, wind, and cloud columns could not be reliably reconstructed for most days. The vapour tension and temperature data for days 14–30 are transcribed from the legible portion of the scan.

Station: Royal Observatory, Hongkong.

Height above M.S.L. 109 ft.

1912.

Month of September.

Long. 7 36 41a 8 E.

Lat. 22° 18′ 13-2" N.

( Zb 10 )

Day.

Barometer.

Air Temperature.

Tension

of

Vapour.

Relative

Humidity.

Wind.

Direction and Force.

Amount of

Cloud.

Rainfall.

Remarks.

Daily

Daily

1912.

Sept.

ins.

29.507

7

I p.

9 P.

78.

I p.

9 P.

Max.

Miu.

Daily Means. Meaus,"

7 Dr.

P.

9 P.

Meana, Sums. (0-10).'

Ins.

ing

0

+

ᄆ

IR.

29.515

29.560

81.2

82.5

80.6

86.5

79-5

0.908

7

-590

+595

.617

80.7

84.2

81.6

85.7

79.6

-896

3

.639

.635

.635

80.9

85.1

80.8

85.7

79.8

.842

+

.663

.592

.624

79.6

88.4

81.1

89.5

78.1

.815

.590

-541

.589

81.1

84.4

82.0

84.7

78.9

.834

.670

.705

.767

80.8

85.9

82.0

88.8

78.9

.897

1784

.768

.774

81,6

85.5

80.8

87.3

79.5

.908

82

-766

.732

.719

80.2

88.2

82.1

89.9

78.7

.886

9

.720

.679

.691

81.4

89.3

83.0

90.8

79.0

.905

10

.680

.716

81.9

91.0

82.4

92.5

78.0

,883

-731

-731

-737

77-5

82.4

76.8

85.0

74.6

.68z

12

-748

.722

.723

75.1

83.3

77-7

83.6

74-4

.668

13

-744

.706

-742

77.4

85-2

79.2

87.0

74.2

.687

14

718

.667

.720

78.2

85.6

80.7

88.0

75.4

.560

15

.676

.620

.643

77.9

87.5

79-3

89.0

6.7

.650

16

.618

-532

.528

76.8

84.2

80.7

88.1

74.7

-530

17

+491

•444

-537

76.5

75-7

71.0

79.5

68.0

422

18

.621

.614

.699

70.0

74.2

71.9

76.7

69.6

-513

19

.710

.650 | .70%

71.6

83.0

76.2

83.0

70.6

.686

20

.643

.613

.691

74-5

78.1

75.4

82.2

73.3

820

21

.700

.690

-733

77.0

81.7

*8.0

82.3

75-9

.783

22

.766 ·

1765

.820

77-7

82.3

78.6

86.8

75.8

.812

23

.863

.867

.927

77.2

82.3

77.9

84-3

75.3

783

24

.932

.903

.949

77-4

80.8

77.3

82.4

74.8

.739

25

.950

.932

.971 | 75-4

80.0

77.6

82.0

73.9

.659

-959

-918

.932

75-3

80.1

76.7

82.4

74.1

.623

27

.911

.877

.867

74.8

79.1

74-7

81.7

73.2

.628

28

.851

-758

-754

75.0

82.7

78.8

88.2

72.1

.565

29

720

.678

.707

77.0

85.1

79.+

87.9

75-3

.590

30

,729

.693

.744

76.7

83.9

78.5

84.6

74.1

.552

**AAKANRRKAS6ms MASR80IRRGAZER:

Dir. Vel. Dir. Vel. Dir. Vel. points..m.ph. |points/m.jch, [points |in.p.11.

ins.

| 1

13

४

ZO

9

14

8.2

0.115

Solar balo; Rainbow; Lightning.

7

8 20 10

17

5.4

7

9

17

9 9

3.2

9

2

1ο

9

5.0

Lightning.

+

13

6

32

8.4

0.130

Lightning; Thunder.

20

13

15

9

5-7

0.075

Rainbow.

1.27

3

3.7

0.015

Dew.

25 27

24

IO

0.5

Dew.

Dew.

2

23

1

25

3

70

2

10

Iz

32

1

5

10 24

28

24

32

29

30

28

LANIN ON O CO

5

3

6

63700

3.6

8.0

6.z

1.7

Dew; Thunderstorm. Lightning.

Lightning.

3.1

2

16

24

8

31

6.4

15

32

18

31

2.1

13

30

22

29

8.7

0.020

10

1

7

4

9.4 i

Lunar balo.

+

24

7

6.2

0.225

29

5 9

29

10

10.0

2.940

6

7

10 20

2

8.5

0.095

Lanar Corona,

Bo

}

20

7

8.2

0.020

Dew.

Bo

8

9

17

9

16

9-4

0.140

77

5

9

19

15

7.4

***

8

70

+

14

15

4.6

0.105

67

11

7

19

4.6

A

70

3.6

58

9

2

0.1

57

12

22

51 24

#

3

3.7

Lunar halo.

55

12

25

11

25 3

1.7

**

T

Mean, 29.723

29.693

29.727

77.6

83.4 78.8

85.5

75.5

0.724

71

8.6

*

13.0

10.0

5-3

3.880