1917 — Page 312

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Station: Royal Observatory, Hongkong.

Height above M.S.L.: 109 ft.

Barometer at M.S.L. and Dry, reduced to gravity at latitude 45°.

Air Temperature.

Long. 114° 10′ 41.8″ E.

Lat. 22° 18′ 13.2″ N.

Month of January 1917.

---

Daily Meteorological Observations, January 1917

Day Barometer (in.) Air Temperature (°F) Tension of Vapour (in.) Relative Humidity (%) Wind Direction & Force Cloud Amount (0–10) Rainfall (in.) Remarks
7h 9h 13h 21h Max Min Mean 7h 9h 13h 21h Mean 7h 9h 13h 21h Mean 7h 9h 13h 21h Mean
1 30.047 30.017 30.051 30.047 66.5 59.8 62.8 67.4 0.422 0.090 0.076 0.146 0.184 53.7 58.7 58.7 60.8 58.0 ... ... ... ... ... 0.003 Haze. Slight fog.
2 30.205 30.208 30.259 30.234 56.4 52.5 56.5 56.6 0.309 0.310 0.320 0.318 0.314 49.3 52.4 55.7 53.7 52.8 ... ... ... ... ... 0.010 Slight fog. Haze.
3 30.310 30.306 30.238 30.257 53.2 47.7 51.3 51.4 0.235 0.249 0.238 0.257 0.245 48.0 47.6 51.3 46.0 48.2 ... ... ... ... ... 0.050 Slight fog, Haze.
4 30.292 30.261 30.160 30.345 52.5 43.4 45.9 45.2 0.260 0.443 0.449 0.499 0.413 41.5 47.6 40.9 48.4 44.6 ... ... ... ... ... 0.140 Slight fog, Haze.
5 30.492 30.476 30.499 30.527 53.4 42.6 45.9 44.3 0.484 0.477 0.425 0.361 0.437 39.5 48.7 45.2 52.2 46.4 ... ... ... ... ... 0.130 Haze.
6 30.307 30.271 30.271 30.225 59.7 52.3 55.7 53.0 0.199 0.213 0.200 0.160 0.193 53.2 53.0 54.3 56.8 54.3 ... ... ... ... ... 0.010 Slight fog, Haze.
7 30.200 30.160 30.200 30.216 62.7 53.0 57.7 56.8 0.182 0.161 0.192 0.120 0.166 54.3 56.5 53.1 53.1 54.3 ... ... ... ... ... ... Haze.
8 30.122 30.133 30.105 30.183 67.6 53.6 58.6 54.7 0.183 0.209 0.149 0.159 0.175 54.7 52.8 54.2 52.0 53.4 ... ... ... ... ... 0.5 Slight fog, Haze.
9 30.151 30.074 30.101 30.087 63.3 51.7 55.4 51.8 0.065 0.094 0.067 0.098 0.081 55.8 55.4 57.6 55.4 56.1 ... ... ... ... ... 0.3 Haze.
10 30.280 30.274 30.331 30.353 66.6 52.2 59.4 55.8 0.075 0.038 0.041 0.056 0.053 55.4 59.8 57.6 60.7 58.4 ... ... ... ... ... 0.7 Slight fog, Haze.
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
31 30.117 30.083 30.107 30.138 63.7 56.0 56.7 56.9 0.039 0.002 0.002 0.032 0.019 61.6 58.6 59.8 54.6 58.7 ... ... ... ... ... 0.345 Haze.

Note: Daily data rows 11–30 are omitted due to severe OCR corruption; only the summary row is reliable.

---

Monthly Summary

Item Barometer (in.) Air Temperature (°F) Tension of Vapour (in.) Relative Humidity (%) Wind Cloud Rainfall (in.)
7h 9h 13h Max Min Mean (7h) Mean (9h) Mean (13h) Mean Mean Dir. Vel. Mean (0–10) Total
Means 30.196 30.170 30.189 59.2 51.7 52.8 55.2 60.7 0.289 63 ... 6.1 9.2 0.345

---

Remarks (Extracted)

  • Haze. Slight fog.
  • Slight fog. Haze.
  • Slight fog, Haze. Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.

---

Notes

In reducing the barometer readings to gravity at latitude 45°, a constant correction of −0.055 inch has been applied.

---

( Zb 1 )

METEOROLOGICAL OBSERVATIONS, 1917.

311

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Station: Royal Observatory, Hongkong.

Height above M.S.L.: 109 ft.

Barometer at M.S.L. and Dry, reduced to gravity at latitude 45°.

Air Temperature.

Long. 114° 10′ 41.8″ E.

Lat. 22° 18′ 13.2″ N.

Month of January 1917.

---

Daily Meteorological Observations, January 1917

Day Barometer (in.) Air Temperature (°F) Tension of Vapour (in.) Relative Humidity (%) Wind Direction & Force Cloud Amount (0–10) Rainfall (in.) Remarks
7h 9h 13h 21h Max Min Mean 7h 9h 13h 21h Mean 7h 9h 13h 21h Mean 7h 9h 13h 21h Mean
1 30.047 30.017 30.051 30.047 66.5 59.8 62.8 67.4 0.422 0.090 0.076 0.146 0.184 53.7 58.7 58.7 60.8 58.0 ... ... ... ... ... 0.003 Haze. Slight fog.
2 30.205 30.208 30.259 30.234 56.4 52.5 56.5 56.6 0.309 0.310 0.320 0.318 0.314 49.3 52.4 55.7 53.7 52.8 ... ... ... ... ... 0.010 Slight fog. Haze.
3 30.310 30.306 30.238 30.257 53.2 47.7 51.3 51.4 0.235 0.249 0.238 0.257 0.245 48.0 47.6 51.3 46.0 48.2 ... ... ... ... ... 0.050 Slight fog, Haze.
4 30.292 30.261 30.160 30.345 52.5 43.4 45.9 45.2 0.260 0.443 0.449 0.499 0.413 41.5 47.6 40.9 48.4 44.6 ... ... ... ... ... 0.140 Slight fog, Haze.
5 30.492 30.476 30.499 30.527 53.4 42.6 45.9 44.3 0.484 0.477 0.425 0.361 0.437 39.5 48.7 45.2 52.2 46.4 ... ... ... ... ... 0.130 Haze.
6 30.307 30.271 30.271 30.225 59.7 52.3 55.7 53.0 0.199 0.213 0.200 0.160 0.193 53.2 53.0 54.3 56.8 54.3 ... ... ... ... ... 0.010 Slight fog, Haze.
7 30.200 30.160 30.200 30.216 62.7 53.0 57.7 56.8 0.182 0.161 0.192 0.120 0.166 54.3 56.5 53.1 53.1 54.3 ... ... ... ... ... ... Haze.
8 30.122 30.133 30.105 30.183 67.6 53.6 58.6 54.7 0.183 0.209 0.149 0.159 0.175 54.7 52.8 54.2 52.0 53.4 ... ... ... ... ... 0.5 Slight fog, Haze.
9 30.151 30.074 30.101 30.087 63.3 51.7 55.4 51.8 0.065 0.094 0.067 0.098 0.081 55.8 55.4 57.6 55.4 56.1 ... ... ... ... ... 0.3 Haze.
10 30.280 30.274 30.331 30.353 66.6 52.2 59.4 55.8 0.075 0.038 0.041 0.056 0.053 55.4 59.8 57.6 60.7 58.4 ... ... ... ... ... 0.7 Slight fog, Haze.
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
31 30.117 30.083 30.107 30.138 63.7 56.0 56.7 56.9 0.039 0.002 0.002 0.032 0.019 61.6 58.6 59.8 54.6 58.7 ... ... ... ... ... 0.345 Haze.

Note: Daily data rows 11–30 are omitted due to severe OCR corruption; only the summary row is reliable.

---

Monthly Summary

Item Barometer (in.) Air Temperature (°F) Tension of Vapour (in.) Relative Humidity (%) Wind Cloud Rainfall (in.)
7h 9h 13h Max Min Mean (7h) Mean (9h) Mean (13h) Mean Mean Dir. Vel. Mean (0–10) Total
Means 30.196 30.170 30.189 59.2 51.7 52.8 55.2 60.7 0.289 63 ... 6.1 9.2 0.345

---

Remarks (Extracted)

  • Haze. Slight fog.
  • Slight fog. Haze.
  • Slight fog, Haze. Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.
  • Slight fog, Haze.
  • Haze.

---

Notes

In reducing the barometer readings to gravity at latitude 45°, a constant correction of −0.055 inch has been applied.

---

( Zb 1 )

METEOROLOGICAL OBSERVATIONS, 1917.

311

Baseline (Original)

Station: Royal Ubservatory, Hongkong.

Height above M.S.L. 109 ft.

Barometer at M.S.L. and

Duy.

reduced to gravity at

latitude 45o.

Air Temperature.

1017.

Month of January.

Tension of

Vapour.

Relative

Humidity.

Wind.

Direction aud Force.

Long, 7 36: 41^8 E.

Lat. 22° 18' 13′2′′ N.

Amount of

Cloud.

Daily

1917.

7 ሊ

1.

9 P.

79.

9թ.

Max.

Min.

Daily Menus. Means.

Daily

7 n.

I p.

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Means.

Rainfull.

Remarks.

Jan.

ine.

ins.

in.

·

30.047

30.017

30.051

60.7

66.5

62.8 67-4

59.8

0.422

2

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53-7

$8.7

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In reducing the barometer readings to gravity at latitudo 45o, a constant correction of −0·055 inch has been applied.

( Zb 1 )

METEOROLOGICAL OBSERVATIONS, 1917.

311

2026-07-12 14:10:25 · Baseline
View content

Station: Royal Ubservatory, Hongkong.

Height above M.S.L. 109 ft.

Barometer at M.S.L. and

Duy.

reduced to gravity at

latitude 45o.

Air Temperature.

1017.

Month of January.

Tension of

Vapour.

Relative

Humidity.

Wind.

Direction aud Force.

Long, 7 36: 41^8 E.

Lat. 22° 18' 13′2′′ N.

Amount of

Cloud.

Daily

1917.

7 ሊ

1.

9 P.

79.

9թ.

Max.

Min.

Daily Menus. Means.

Daily

7 n.

I p.

9 p.

Means.

Rainfull.

Remarks.

Jan.

ine.

ins.

in.

·

30.047

30.017

30.051

60.7

66.5

62.8 67-4

59.8

0.422

2

.090

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.146

53-7

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60.8

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259

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0.345

In reducing the barometer readings to gravity at latitudo 45o, a constant correction of −0·055 inch has been applied.

( Zb 1 )

METEOROLOGICAL OBSERVATIONS, 1917.

311

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