70 
Years 
1965 
1966 
1967 
1968 
1969 
Mean 
Maximum 
Mean Max, 
Mean Min, 
Minimum 
1951-1954 
1955-1959 
1960-1964 
1965 
1966 
1967 
1968 
1969 
Mean 
Maximum 
Mean Max, 
Mean Min, 
Minimum 
1957-1959 
1960-1964 
1965 
1966 
1967 
1968 
1969 
Mean 
Maximum 
Mean Max, 
Mean Min, 
Minimum 
1950-1953 
Mean 
Maximum 
Mean Max, 
Mean Min, 
Minimum 
1958 
January February 
Temp. Dens. 
ne 7 Oits 
23.4 
23.6 
22.e 
PHOS) 
24.1 
tO 
ON 
e es) 8) 
PuUINh FO 
2303 
Zeya 
hs | 
21.9 
20.7 
nN 
foe) 
. . . . . . . . 
PRPMNO FRY 
MN DY 
NNNND 
. . . . 
Wy ONW F COW Win CO 
tw 
\O 
ray 
(ae) 
W 
oO 
. 
— 
PrmH FW WW WWW MW WWW 
. . . . ° . 
ine) 
™~ 
MND PY 
oo. . 
Nn OO re 
1S) 
oO 
. OF: vr se . « 
Oo oOOrPAWW WE 
Zhek 24.3 127.2 25.3 
ine) 
ine) 
\O 
NMNNNMN DY 
Ww £&Oowm WW Un ONU 
oe © @ 
OO RPh 
ie) 
= 
(ne) 
ine) 
N WEWr & 
NO 
ON 
pe 
MNMMPY 
29.6 
29. 
tN PO 
29.9 
3055 
2720 
26.9 
26.9 
NMNMN ND 
oe Ge? .a} ge, ca oe 
FO —OnN Wo 
bo 
29.0 
32 
30.0 
27.9 
27 
DOWIE ER SCO Eas 
mM N 
e ° 
SSUNiCOON- 0D 
22.4 
22.4 
30 
27.3 
19.3 
17 
28.0 255% 
hw 
\O 
. 
ine) 
NN PY 
1ae) 
CO 
\O 
MNMNNN PY 
(OS BED PSS Weis ee PS eS 
Lae) 
\O 
ra 
nN 
. . 
WN Ww FWORDEF WOO 
25.0 
25.0 
32 
29.6 
fied 
19 
29D [25 ie9 
*Observations for the year are incomplete; extremes are for the months shown. 
Table 1. - Surface Water 
Means and 
June 
Temp. 
Cc 
28.6 
29.0 
28.4 
28.9 
29.6 
208% 
ph 
29.8 
Peat, 
27 
Dens. 
"75 
24, 
Ae)c 
2a 
20. 
Be 
(ARS 
25. 
23. 
20. 
17. 
NFOWN MW WOON 
July 
Temp. 
°C 
Dens. 
7s 
NAOS ISLAND, 
28.9 
28.3 
28.4 
28.9 
28.4 
30 
29.4 
27.6 
27 
23.9 
aia 
2a 
2219 
Zea 
24.7 
2a 
20.4 
15.4 
PUERTO ARMUELLES, 
28.2 
Zoey 
28.6 
29.1 
27 2 
257 
27.6 
30.0 
28.6 
GA 
29.8 
27.1 
26 
NN 
NNNN ND 
ON ON ON™) \/O @O\O 
. ° . . ° . e . 
br O MOWWN Wer 
ie) 
(ee) 
29.0 
24.8 
24.5 
24.0 
aveg 
23.4 
23.4 
23.9 
24.2 
26.8 
25 61 
2250 
20} 2! 
28.4 
29.0 
28 ong, 
29.3 
28.6 
28.7 
ASae 
24.2 
24.0 
23.00 
Zee 
2228 
Cae 
23.8 
23.8 
26.7 
24.18 
ZAP 
ZA SD 
QUEPOS, 
ae, 
(lon, 
23.4 
22a 
Alas 
Vag 
2ame 
BOE 
24.5 
238 
1938 
sa 2) 
SAN JUAN DEL 
25.0 
25.0 
26.8 
26.0 
23.4 
23: 
27.47 
2767 
32 
30.4 
24.3 
22 
25.4 
25.4 
27.4 
26.6 
2359 
23nA 
PUERTO SOMOZA, 
18.7 
29.1 
24,1 
