(Zb 13 )

323

Mean Pressure

λο

Station ROYAL OBSERVATORY, HONGKONG.

:

: 7h 36TM 41′′86 E. = 22° 18′ 13′′-2 N. H=109 feet.

Air Temperature.

Tension of Vapour.

Month.

At

Means of

Absolute.

Relative

Humidity.

M.S.L.

And

7.

1

1917.

+

9.

Mean. †

Mean.

Lat. 45°.

Mean.

Miu.

Max.

Min.

Max.

а

0

O

0

O

ins.

Z

ins.

January..........

30.183

52.8

59.2

55-2

55.8

517

60.7

38.8

70.1

0.289

63

February,

.071 56.9 62.6

59.0

39.4

55.3

64.4 .45.7

74.0

0.371

24

72

March,

.038

59.6 63.7

61.4

61.6

58.3

65.9

48.4

77.2

0.434

78

April,........

29.833

68.z

69.0 71.0

69.4

66.4 73.5

59.4

80.6

0.626

86

May,

.820

73.1 77.8

73.8

74.8

70.9 79.4 59-7 89.6

0.722

82

Jane,

-723

80.7

84.2

80.9 81.8

78.4

86.6

74.9

89.1

0.899

83

July,

.631

79.6 83.8

80.3

81.1

77-7 85.4 73.7

90.8

0.884

83

August,

.702

80.0

85.2

81.1

82.0 78.3

87.2 74-4 90.5

0.904

83

September.......

.8oz

80.0

85.0

81.1 82.0 78.1 86.6

74-3

89.9

0.848

77

October,..

.898 74-7

80.1

November,

30.066 65.2

71.7

68.0

J

76.5 77.0 73.8

64-7

81.3

66.9 86.8

0.679

73

68.2

72.7 57.1

82.9

0.431

December,

.093 56.3

62.5

58.9 59.2 55.2

63.7 46.9

71.7

0.318

88

бо

бо

Year,

29.905 68.9

73.9

70-4 71.0

67.4

75.6

38.8

90.8

0.617

75

ht=4 feet.

=

hr 13 feet.

Cloud.

Bright Sunshine.

Rainfall.

Weather.

No. of Days of

Wind.

No. of Days of

Mouths.

Mean.

Total.

Percent-

ມ ວສ

possible.

Totul.

Daily Max.

Rain.

Thunder-

storms.

* Gules.

N.

N.E.

E.

S.E. 9. S.W.

W.

N.W.

hours.

January,

56

169.9

February,

64

134.5 42

Marcb, ...................

116.9 31

April,

87

76.9

May,..

73

168.6

June,

80

July,.....................

73

189.5

August,.

55

239.6

September, ..........

50

266.5

October,...........

38

258.8

November,

56

189.2

December,

+3

63 209.0

* 1778798 KRESB

%

ins.

ius.

50

0.345

0.140

20

42

0.405 0.100 2.670 1.495 2.630 5.230 9.685 3.630 14

16

into ove

2

167.8 42 11.540 2.435 28

30.075 8.100 15

бо

73

11.950 4.880

4.310 14

72

1.265 3.470 2.390 6

12

hma+n+

7

1

~wwŏ

9

57 0.095

1.140

0.095 0.735

T

3

4

6

7

1

7

5

18

100

+

17

...

:

4

18

2

22

1

---

I 21

2

2

1

17

5

3

3

2

5

સોન

22

IN W

3

6

N+ND

2

+

7

10

I

I

I

24

2

1

...

104

***

1

Year,

63 2187.2 50

81.485 8.100 131 32

A = The longitude of the station.

At=Height of the therms. above the ground.

32 196 25 18 35 23

H = Height above mean sea love).

hr Height of the rain-gauge above the ground.

Days of gales means days during some hour of which the wind velocity reached or exceeded 40 miles per hour (by Beckley anemograph, factor 3). In the Year 1917 there were no days of snow, bail, or calm. For further particulars sos "Monthly Meteorological Bulletins for the year 1917 ".

† Mean of 24 hourly values.

5

31

5

The latitude of the station.

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