For den hele Gruppe bliver ¢= + 0.0080, 
Fejlen i Observationsklokkeslettet ved Middag har sin 
største Værdi — 35.72 den 25de Juli, paa Vejen til Jan 
Mayen, og sin næststørste, + 23.73, den 7de Juli. Summen 
af positive Fejl er 111.”4, fordelt paa 10 Dage, eller 11.”i4 
113 
For the whole group ¢= + 0.0080. 
The error in the hour of observation at noon reached 
its greatest value, — 35.72, on the 25th of July, on the 
passage to Jan Mayen, and its next greatest, + 23.3, 
July 7th. The sum of the positive errors is 111.”4, distri- 
pr. Dag. Summen af negative Fejl er — 143.6. fordelt || buted over 10 days, or 11.714 per day. The sum of the 
paa 10 Dage, eller — 14.”36 pr. Dag. Den gjennemsnitlige negative errors is — i43.”6, distributed over 10 days, or 
Fejl bliver — 32.”8, fordelt paa 20 Dage, eller —1."6 pr. | —14.736 per day. The average error is thus — 32.”3. 
Dag. | distributed over 20 days, or — 1.76 per day. 
a.m. 
Klokkeslet Ty gå BU 4" gå 6” opie SU Ou iO nr  nale Hour. 
Corr. Obs.media O80 6.02 Oo FO FOR 722 PRO 728 780 790 Fas 74 0655 Gos, wees, 
Afv. fra Dagsmedium —o0.56 —-0.50 —0.49 —0.41 —0.39 —0.20 —0.12 —0.14 0.08 0.34 0.39 0.44 Diff. from daily mean. 
Beregnet Afvigelse —0.48 —0.53 —0:53 —o.48 —0.38 —0.27 —0.11 0.02 0.14 0.24 0.30 0.34 Computed difference. 
Forskjel: Obs.— Ber. —0.08 0.03 0.04 0.07 —0.0I 0.07 —-0.01 —0.16 —0.06 0.10 0.09 _ 0.10 Diff.: obs. — comp. 
p.m. 
Corr. Obs.media je FO 707 FOO 788 70 Fon 786 Wot 728 oud Ooo) Coe, dus menns 
Afv. fra Dagsmedium 0.40. 0:27 0:25 0:27 0.41 0.34 0.22 0.14 —0.01 —0.14 —0.28 —0.43 Diff. from dailymean. 
Beregnet Afvigelse 0.36 0.37 0.36 0.35 0.32 0.28 0.22 0.12 0.01 —0.12 —0.26 —o.38 Computed difference. 
Forskjel: Obs. — Ber. 0.04 —o.10 —o0.1 1 0.08 0.09 0.06 0.00 0.02 —0.02 —0.02 —0.02 —0.05 Diff.: obs. — comp. 
Formel (Formula): t, = 7.9415 — 0.0452 sin (53° 38,’2 + t) — 0.0083 sin (12° 32’ + 21). 
Figuren Pl. I, Luftens Temperatur 1877 A, viser, at 
den observerede Curve springer temmelig meget paa begge 
Sider af den beregnede. Det observerede Minimum ved 
Kl. 5 p.m. synes ikke at have reel Betydning. Derfor er 
Curven beregnet med kun 2 Led. MF = + 0.06. 
Efter Formelen beregnes 
Minimum: — 0.954, 229" a.m., Maximum: + 0.087, 2% 1” p.m. 
Medium indtræffer: 7” 49” a.m. og 9” 7” p.m. 
Amplitude: 0./91. 
Til den anden Gruppe for 1877, der omfatter Obser- 
vationer, som toges, medens Expeditionen befandt sig 1 den 
Gronlandske Polarstroms Omraade — hvor Temperaturen 
1 Havet allerede 1 20 Favnes Dyb er under 0? C. —, men 
i isfrit Farvand, ved og omkring Jan Mayen, ere benyttede 
Observationerne for Juli 28 til August 5. 9 Dage. 
The figure in Pl. I, Temperature of the Air, 1877 
A, shows that the observed curve diverges considerably on 
both sides of that computed. ‘The observed minimum at 
3 p.m. would appear to have no real significance. The 
curve has therefore been computed with only two terms. 
MF = + 62°06: - 
From the formula were computed — 
Minimum — 0.054, 27 29" a.m.; Maximum + 0.087, 2” 1” p.m. 
The Mean occurs at 7” 49” am. and 9% 7” p.m., 
Total Range: 0.091. 
For the second group, 1877, comprising the observa- 
tions taken within the linuts of the Greenland Polar current. 
— where the temperature of 'the sea at a depth of not 
more than 20 fathoms is below 0° C., — but in water free 
from ice, in more or less close proximity to the shores ot 
Jan Mayen, the observations applied are those taken from 
July 28th to August 5th, 9 days. 
Den (on the) 27 Juhi (of July), 12” p.m. var Temperaturen (the temperature was) 4.4. 
på så 5 Aug. (of Aug.) 
i 4.94, 
—  Rorskjel (Difference) 
Den norske Nordhavsexpedition.. H. Mohn: Meteorologi. 
0.°0: 9 = 0.°00 = ec. 
