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HONGKONG OBSERVATORY

λ = 114° 10′ 41.86″ E. φ = 22° 18′ 12″.2 N. H = 109 feet.

Month Mean Pressure Air Temperature Tension of Vapour Relative Humidity Means of Absolute Min. & Max.
10 a. 4 p. 10 p. Mean 10 a. 4 p. 10 p. Mean 10 a. 4 p. 10 p. Min. Max. Mean
Jan. 30.054 63.0 60.3 61.2 57.6 65.4 42.8 72.9 0.355 0.378 0.367 0.355 60 75 69 77
Feb. 30.025 56.0 55.0 55.2 52.1 58.4 40.6 68.6 0.353 0.356 0.405 0.378 64 77 77 83
Mar. 29.935 65.3 64.2 64.4 61.2 68.5 54.2 77.9 0.519 0.525 0.531 0.521 82 82 82 82
April 29.801 73.8 71.6 72.5 69.0 76.7 58.9 84.8 0.700 0.707 0.699 0.698 83 83 83 83
May 29.731 79.7 77.0 78.0 74.5 82.0 69.2 88.0 0.876 0.873 0.878 0.876 81 80 81 80
June 29.569 81.2 79.8 80.3 77.1 83.8 69.4 87.1 0.831 0.815 0.820 0.821 81 80 81 80
July 29.588 81.8 82.0 83.1 79.3 87.7 75.8 92.9 0.909 0.900 0.911 0.908 76 82 78 85
Aug. 29.606 82.6 80.3 81.4 77.5 86.0 72.2 90.4 0.898 0.891 0.894 0.894 81 81 81 91
Sept. 29.772 82.5 80.2 80.9 77.5 84.6 70.8 88.9 0.816 0.809 0.839 0.825 73 72 73 72
Oct. 29.922 76.7 75.0 75.6 72.3 78.7 64.1 83.8 0.623 0.651 0.673 0.650 67 67 67 67
Nov. 29.976 72.9 70.3 71.3 67.8 75.4 60.8 82.6 0.534 0.553 0.552 0.549 65 65 65 65
Dec. 30.021 66.3 64.9 65.1 61.8 68.4 53.4 75.2 0.452 0.466 0.480 0.466 68 70 77 74
Year 29.833 73.7 71.7 72.4 ... ... 10.6 92.9 0.662 ... ... ... 79 ... ... ...

VICTORIA PEAK, Hongkong

λ = ... φ = ... H = 1815 feet.

Month Mean Pressure Air Temperature Tension of Vapour Relative Humidity Means of Absolute Min. & Max.
10 a. 4 p. 10 p. Mean 10 a. 4 p. 10 p. Mean 10 a. 4 p. 10 p. Min. Max. Mean
Jan. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
Feb. 28.218 51.0 50.6 51.0 47.8 54.7 35.3 65.8 0.350 0.364 0.342 0.352 91 90 89 90
Mar. 28.181 61.4 60.9 61.3 57.7 65.2 50.2 71.5 0.514 0.530 0.492 0.512 93 93 93 93
April 28.081 69.4 67.7 69.0 65.1 70.9 63.9 75.9 0.667 0.679 0.644 0.663 95 90 92 95
May 28.031 72.2 71.2 71.9 69.6 74.6 64.3 78.1 0.758 0.768 0.786 0.754 95 95 96 95
June 27.882 73.9 73.4 73.8 71.7 76.2 65.3 79.8 0.819 0.831 0.804 0.818 97 97 97 97
July 27.911 77.1 76.1 76.9 74.9 79.7 73.3 84.2 0.862 0.864 0.820 0.849 93 93 93 93
Aug. 27.927 73.8 74.9 75.7 73.8 78.4 68.8 82.2 0.831 0.839 0.809 0.826 93 93 93 93
Sept. 28.072 75.3 74.1 74.8 73.1 77.8 66.1 82.3 0.790 0.788 0.754 0.777 90 87 89 89
Oct. 28.193 69.1 67.9 68.7 65.9 72.1 58.8 75.9 0.626 0.649 0.603 0.626 86 87 86 87
Nov. 28.232 65.8 64.6 65.4 62.0 69.3 58.2 74.9 0.542 0.553 0.514 0.536 85 84 86 86
Dec. 28.244 59.1 58.3 59.2 56.3 63.2 47.0 69.0 0.441 0.463 0.431 0.445 86 86 87 87
Year 28.104 67.0 ... ... ... ... 35.3 84.2 0.627 ... ... ... 69 ... ... ...

λ = The longitude of the station.

φ = The latitude of the station.

H = Height above mean sea level.

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2026-07-07 20:23:42 · NVIDIA / meta/llama-4-maverick-17b-128e-instruct
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HONGKONG OBSERVATORY λ = 114° 10′ 41.86″ E. φ = 22° 18′ 12″.2 N. H = 109 feet. Month Mean Pressure Air Temperature Tension of Vapour Relative Humidity Means of Absolute Min. & Max. 10 a. 4 p. 10 p. Mean 10 a. 4 p. 10 p. Mean 10 a. 4 p. 10 p. Min. Max. Mean Jan. 30.054 63.0 60.3 61.2 57.6 65.4 42.8 72.9 0.355 0.378 0.367 0.355 60 75 69 77 Feb. 30.025 56.0 55.0 55.2 52.1 58.4 40.6 68.6 0.353 0.356 0.405 0.378 64 77 77 83 Mar. 29.935 65.3 64.2 64.4 61.2 68.5 54.2 77.9 0.519 0.525 0.531 0.521 82 82 82 82 April 29.801 73.8 71.6 72.5 69.0 76.7 58.9 84.8 0.700 0.707 0.699 0.698 83 83 83 83 May 29.731 79.7 77.0 78.0 74.5 82.0 69.2 88.0 0.876 0.873 0.878 0.876 81 80 81 80 June 29.569 81.2 79.8 80.3 77.1 83.8 69.4 87.1 0.831 0.815 0.820 0.821 81 80 81 80 July 29.588 81.8 82.0 83.1 79.3 87.7 75.8 92.9 0.909 0.900 0.911 0.908 76 82 78 85 Aug. 29.606 82.6 80.3 81.4 77.5 86.0 72.2 90.4 0.898 0.891 0.894 0.894 81 81 81 91 Sept. 29.772 82.5 80.2 80.9 77.5 84.6 70.8 88.9 0.816 0.809 0.839 0.825 73 72 73 72 Oct. 29.922 76.7 75.0 75.6 72.3 78.7 64.1 83.8 0.623 0.651 0.673 0.650 67 67 67 67 Nov. 29.976 72.9 70.3 71.3 67.8 75.4 60.8 82.6 0.534 0.553 0.552 0.549 65 65 65 65 Dec. 30.021 66.3 64.9 65.1 61.8 68.4 53.4 75.2 0.452 0.466 0.480 0.466 68 70 77 74 Year 29.833 73.7 71.7 72.4 ... ... 10.6 92.9 0.662 ... ... ... 79 ... ... ... VICTORIA PEAK, Hongkong λ = ... φ = ... H = 1815 feet. Month Mean Pressure Air Temperature Tension of Vapour Relative Humidity Means of Absolute Min. & Max. 10 a. 4 p. 10 p. Mean 10 a. 4 p. 10 p. Mean 10 a. 4 p. 10 p. Min. Max. Mean Jan. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Feb. 28.218 51.0 50.6 51.0 47.8 54.7 35.3 65.8 0.350 0.364 0.342 0.352 91 90 89 90 Mar. 28.181 61.4 60.9 61.3 57.7 65.2 50.2 71.5 0.514 0.530 0.492 0.512 93 93 93 93 April 28.081 69.4 67.7 69.0 65.1 70.9 63.9 75.9 0.667 0.679 0.644 0.663 95 90 92 95 May 28.031 72.2 71.2 71.9 69.6 74.6 64.3 78.1 0.758 0.768 0.786 0.754 95 95 96 95 June 27.882 73.9 73.4 73.8 71.7 76.2 65.3 79.8 0.819 0.831 0.804 0.818 97 97 97 97 July 27.911 77.1 76.1 76.9 74.9 79.7 73.3 84.2 0.862 0.864 0.820 0.849 93 93 93 93 Aug. 27.927 73.8 74.9 75.7 73.8 78.4 68.8 82.2 0.831 0.839 0.809 0.826 93 93 93 93 Sept. 28.072 75.3 74.1 74.8 73.1 77.8 66.1 82.3 0.790 0.788 0.754 0.777 90 87 89 89 Oct. 28.193 69.1 67.9 68.7 65.9 72.1 58.8 75.9 0.626 0.649 0.603 0.626 86 87 86 87 Nov. 28.232 65.8 64.6 65.4 62.0 69.3 58.2 74.9 0.542 0.553 0.514 0.536 85 84 86 86 Dec. 28.244 59.1 58.3 59.2 56.3 63.2 47.0 69.0 0.441 0.463 0.431 0.445 86 86 87 87 Year 28.104 67.0 ... ... ... ... 35.3 84.2 0.627 ... ... ... 69 ... ... ... λ = The longitude of the station. φ = The latitude of the station. H = Height above mean sea level.
Baseline (Original)
(Zo 2) Station HONGKONG OBSERVATORY À 7 36 41.86 E. 22° 18′ 12′′.2 N. H == 109 feet. = 7o = • Mouths. Mean Prossure. Air Temperature. Tension of Vapour. Relative Humidity. Means of Absolute Min. & Max. 10 a. 4 p. 10 p. Menn. 10 a. 4 p. 10 p. Mean. 10 a. 4 p. 10 p. Min. Mux. Min. Max. Menn. Jan.,... 30.054| 63.0 63.0|60.3 61.2 57.6 65.4 42.8 72.9 0.355 0.378 Feb.,... 30.025 56.0 56.4 55.0 55.2 52.1 58.4 40.6 68.6 0.353 0.356 0.405 0.378 60 64 75 69 0.367 0.355 77 77 83 Mar., April, May, June, · 29.935 65.3 65.6 64.2 64.4 61.2 68.5 54.2 77.9 0.519 0.525 0.5310.521 | 82 29.801|| 73.8 74.4| 71.6 72.5 69.0 76.7 58.9 84.8 0.700 0.707 | 0.699 | 0.698 83 29.731| 79.7 79.6| 77.0 29.569 81.2 81.4 79.8 80.3 77.1 83.8 69.2 88.0 0.876 0.873 0.878 0.876 81 80 July, 29.588 81.8 85.5 82.0 83.1 79.3 87.7 75.8 92.9 0.909 | 0.900 | 0.911 0.908|| 76 82 ୫୬ 78.0 74.5 82.0 69.4 87.1 | 0.831 0.815 0.820 0.821 | 81 £ 2 2 2 8 80 8 80 87 88 85 85 84 * 8 8 8 85 89 87 Aug., Sept., • 29.60% 82.6 83.8 80.3 81.4 77.5| 86.0 72.2 90.4 0.898 | 0.891 | 0.894 0.894|| 91 29.772|| 82.5 82.7 80.2 80.9| 77.5 84.6| 70.8| 88.9 0.816| 0.809 | 0.839 | 0.825 73 72 Oct., 29.922 76.7| 76.9 75.0| 75.6 72.3 78.7 64.1 83.8 0.623 0.651 0.673 0.650 67 + Nov., 29.976 72.9 73.1 70.3 71.3 67.8 75.4 60.8 82.6 0.534 0.553 0,552 | 0.549 65 Dec. 30.021 66.3 66.7 64.9 65.1 61.8 68.4 53.4 75.2 0.452 0.466| 0.480 0.466 68 70 77 74 * : 2 8 6 2 71 83 80 77 87 81 69 24 76 72 2 7 * 2 84 78 67 74 71 Year, 29.833 73.7 74.1 71.7 72.4 10.6 92.9 0.662 79 Station VICTORIA PEAK, Hongkong λ = + + . $ = . H = 1815 feet. Jan., Feb.,... 28.218 51.0 52.3| 50.6| 51,0| 47.8| 54.7| 35.365.8 28.271 57.1 59.6| 56.0 | 57,1| 53.6| 61.7 44.2 67.2 0.360 0.382 | 0.347 | 0.363| 75 || 74 | 76 | 75 88 2 0.350| 0.364| 0.342 | 0.352 | 91 90 89 90 Mar., 28.181 61.4| 62.3| 60,9| 61,3| 57,7| 65,2| 50.2| 71.5 0.514| 0.530| 0.492 0.512 93 93 April, 28.081 69.4 69.0 67,7| 69,0| 65,1| 70,9| 63.9| 75.9| 0,667 | 0.679† 0.644| 0.663|| 95 90 92 95 94 95 96 95 90 3 9 9 95 2 5 6 8 7 298 2 May,... 28.031| 72.2 72.7 71.2 71.9 69.6| 74.6 64.3 78.1 0.758 0.768 0.786 0.754|95 · June, 27.882 73.9 74.5 73.4 73.8 71.7| 76.2| 65.3 79.8|| 0,819| 0.831 | 0.804 0.818 97 97 97 July,... 27.911 77.1 78.2 76.1 76.9 74.9 79.7 73.3 84.2 0.862 | 0.864 | 0.820 0.849 93 · Aug., 27.927 | 73.8 | 76.8| 74.9 75,7 783.8| 78.47 68,8| 82.2 0.831 0.839 0.809 0.826 93 Sept., 28.072 75.3 76.4 74.1 74.8 73.1 77.8 66.1 82.3| 0.790| 0.788| 0.754 0.777 90 87 89 Oct., ... 28.193| 69.1| 70.3 | 67.9| 68.7 | 65.9 72.1 | 58.8 75.9|| 0.626| 0.649| 0.603 0.626 86 87 Nov., 28.232 65.8| 67,4| 64,6| 65.4| 62,0| 69.3| 58.2| 74.9|| 0.542 0.553 0.514 0.536 Dec..... 28.244| 59.1| 61.3| 58.3 59.2 56.3 63.2 47.0 69.0 0.441 0.463 0.431| 0.445| 86 85 84 2 6 6 2 * 91 93 91 91 92 87 87 82 84 84 97 2 6 6 * : ** 89 87 86 Year,. 28.104 67.0 35.3 84.2 - The longitude of the station. The latitude of the station. B = 0.627 Height above mean sea level. 69
2026-07-07 20:23:42 · Baseline
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(Zo 2)

Station HONGKONG OBSERVATORY À 7 36 41.86 E. 22° 18′ 12′′.2 N. H == 109 feet.

= 7o

=

•

Mouths.

Mean Prossure.

Air Temperature.

Tension of Vapour.

Relative Humidity.

Means of

Absolute Min. & Max.

10 a. 4 p. 10 p.

Menn.

10 a.

4 p.

10 p.

Mean. 10 a. 4 p. 10 p.

Min. Mux. Min. Max.

Menn.

Jan.,... 30.054| 63.0 63.0|60.3 61.2 57.6 65.4 42.8 72.9 0.355 0.378

Feb.,... 30.025 56.0 56.4 55.0 55.2 52.1 58.4 40.6 68.6 0.353 0.356

0.405 0.378 60 64

75

69

0.367 0.355 77 77 83

Mar.,

April,

May,

June,

·

29.935 65.3 65.6 64.2 64.4 61.2 68.5 54.2 77.9 0.519 0.525 0.5310.521 | 82

29.801|| 73.8 74.4| 71.6 72.5 69.0 76.7 58.9 84.8 0.700 0.707 | 0.699 | 0.698 83

29.731| 79.7 79.6| 77.0

29.569 81.2 81.4 79.8 80.3 77.1 83.8 69.2 88.0 0.876 0.873 0.878 0.876 81 80

July, 29.588 81.8 85.5 82.0 83.1 79.3 87.7 75.8 92.9 0.909 | 0.900 | 0.911 0.908|| 76

82

୫୬

78.0 74.5 82.0 69.4 87.1 | 0.831 0.815 0.820 0.821 | 81

£

2 2 2 8

80

8

80

87

88 85

85

84

* 8 8 8

85

89 87

Aug.,

Sept.,

•

29.60% 82.6 83.8 80.3 81.4 77.5| 86.0 72.2 90.4

0.898 | 0.891 | 0.894 0.894|| 91

29.772|| 82.5 82.7 80.2 80.9| 77.5

84.6| 70.8| 88.9

0.816| 0.809 | 0.839 | 0.825 73 72

Oct.,

29.922 76.7| 76.9 75.0| 75.6 72.3

78.7 64.1 83.8

0.623 0.651 0.673 0.650 67

+

Nov., 29.976 72.9 73.1 70.3 71.3 67.8 75.4 60.8 82.6 0.534 0.553 0,552 | 0.549 65

Dec. 30.021 66.3 66.7 64.9 65.1 61.8 68.4 53.4 75.2 0.452 0.466| 0.480 0.466 68 70 77 74

* : 2 8 6 2

71

83 80

77 87

81

69

24

76 72

2 7 * 2

84

78

67

74 71

Year,

29.833 73.7 74.1 71.7 72.4

10.6 92.9

0.662

79

Station VICTORIA PEAK, Hongkong λ =

+

+

. $ =

. H = 1815 feet.

Jan.,

Feb.,... 28.218 51.0 52.3| 50.6| 51,0| 47.8| 54.7| 35.365.8

28.271 57.1 59.6| 56.0 | 57,1| 53.6| 61.7 44.2 67.2 0.360 0.382 | 0.347 | 0.363| 75 || 74 | 76 | 75

88 2

0.350| 0.364| 0.342 | 0.352 | 91 90 89 90

Mar., 28.181 61.4| 62.3| 60,9| 61,3| 57,7| 65,2| 50.2| 71.5 0.514| 0.530| 0.492 0.512 93 93

April, 28.081 69.4 69.0 67,7| 69,0| 65,1| 70,9| 63.9| 75.9| 0,667 | 0.679† 0.644| 0.663|| 95

90

92

95 94

95

96 95

90

3 9 9

95

2 5 6

8 7

298 2

May,... 28.031| 72.2 72.7 71.2 71.9 69.6| 74.6 64.3 78.1 0.758 0.768 0.786 0.754|95

·

June, 27.882 73.9 74.5 73.4 73.8 71.7| 76.2| 65.3 79.8|| 0,819| 0.831 | 0.804 0.818 97 97 97

July,... 27.911 77.1 78.2 76.1 76.9 74.9 79.7 73.3 84.2 0.862 | 0.864 | 0.820 0.849 93

·

Aug., 27.927 | 73.8 | 76.8| 74.9 75,7 783.8| 78.47 68,8| 82.2 0.831 0.839 0.809 0.826 93

Sept., 28.072 75.3 76.4 74.1 74.8 73.1 77.8 66.1 82.3| 0.790| 0.788| 0.754 0.777 90 87 89

Oct., ... 28.193| 69.1| 70.3 | 67.9| 68.7 | 65.9 72.1 | 58.8 75.9|| 0.626| 0.649| 0.603 0.626 86 87

Nov., 28.232 65.8| 67,4| 64,6| 65.4| 62,0| 69.3| 58.2| 74.9|| 0.542 0.553 0.514 0.536

Dec..... 28.244| 59.1| 61.3| 58.3 59.2 56.3 63.2 47.0 69.0 0.441 0.463 0.431| 0.445| 86

85

84

2 6 6 2 *

91

93

91 91

92

87 87

82 84

84

97

2 6 6 * : **

89

87 86

Year,. 28.104

67.0

35.3 84.2

-

The longitude of the station.

The latitude of the station.

B =

0.627

Height above mean sea level.

69

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