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Seawater sampling varies during the cruise but salts, oxygens, & chlorophylls are drawn on virtually all CTD-rosette hydrographic stations - typically 75 on Summer & Fall cruises, 104 on Winter & Spring. Nutrient samples are taken on 75 stations on southern Lines 93.3 through 76.7. Nutrient samples may be taken on Line 73, analyst time and reagents-permitting, totalling ~82 stations.
Twenty-four 10L bottles are available on the rosette but, traditionally, 20 bottle depths are targeted during a 515m cast. Sampling depths in the upper 200m vary (3 cast 'types') based on the depth of the CTD fluorescence peak (chlorophyll max) & mixed layer. Additional bottles and depths are often added for the daily primary productivity incubation experiments whose target depths are determined by Secchi & chl-max depths. NCOG, DIC/pH, and CCE-LTER samples plus ancillary assays often require extra bottles for adequate seawater.
In addition to the specific stations indicated in the matrix, 18 prodo (3 samples from 6 depths) & 4 NCOG samples (1 sample from 10m, chl-max, 170m, 515m) are taken on daily prodo stations. These are noontime primary productivity 14C uptake incubation experiments performed on southern Lines 93.3 - 76.7, typically 15 per cruise.
On lines north of Line 76.7, seawater sampling, if performed, is reduced to 12-10L bottles on 515m casts since analytical personnel are reduced.
On all stations with bottom depths less than 500m, the terminal depth is ~10m from bottom so the number of bottle depths vary. When bottom depth is 75m or less, an additional 5m bottle is tripped.
DIC stations listed with an "X" are typically 8-10 samples from 8 depths. Otherwise, the number listed, between 1 to 3, are the number of DIC/pH samples collected.

Order CalCOFI CalCOFI           NCOG   Aprox  
Occupied Line Sta   Salinity Oxygen Nutrients Chloro +prodo stas DIC/pH Bottom Comments:
1 93.3 26.7   X X X X     63  
2 93.4 26.4   X X X X     20 SCCOOS 20m Isobath sta
3 91.7 26.4   X X X X     20 SCCOOS lat/lon approx
4 93.3 28   X X X X   2 609  
5 93.3 30   X X X X   X 846  
6 93.3 35   X X X X     616  
7 93.3 40   X X X X     1627  
8 93.3 45   X X X X   1 1376  
9 93.3 50   X X X X     1452  
10 93.3 55   X X X X     1588  
11 93.3 60   X X X X     1899  
12 93.3 70   X X X X     3931  
13 93.3 80   X X X X     3848  
14 93.3 90   X X X X   1 4109  
15 93.3 100   X X X X     4132  
16 93.3 110   X X X X     3868  
17 93.3 120   X X X X X 3 4061  
18 90 120   X X X X     4141  
19 90 110   X X X X     4017  
20 90 100   X X X X     3997  
21 90 90   X X X X X X 3879  
22 90 80   X X X X   1 3694  
23 90 70   X X X X X   3806  
24 90 60   X X X X   X 880  
25 90 53   X X X X X X 1309  
26 90 45   X X X X   2 1695  
27 90 37   X X X X X 2 1177  
28 90 35   X X X X     344  
29 90 30   X X X X   X 613  
30 90 28   X X X X   2 63  
31 90 27.7   X X X X     20 SCCOOS 20m sta
32 88.5 30.1   X X X X     20 SCCOOS lat/lon approx
33 86.8 32.5   X X X X     20 SCCOOS 20m
34 86.7 33   X X X X   2 57  
35 85.4 35.8   X X X X     20 SCCOOS 20m
36 86.7 35   X X X X X   662  
37 86.7 40   X X X X     737 Santa Monica Basin 700m
38 86.7 45   X X X X     1644  
39 86.7 50   X X X X     78  
40 86.7 55   X X X X     1201  
41 86.7 60   X X X X     722  
42 86.7 70   X X X X     3771  
43 86.7 80   X X X X     4041  
44 86.7 90   X X X X   1 4099  
45 86.7 100   X X X X     4147  
46 86.7 110   X X X X     3951  
47 83.3 110   X X X X     4163  
48 83.3 100   X X X X     4145  
49 83.3 90   X X X X   1 4247  
50 83.3 80   X X X X     4180  
51 83.3 70   X X X X     3797  
52 83.3 60   X X X X     1397  
53 83.3 55   X X X X     999  
54 83.3 51   X X X X     102  
55 83.3 42   X X X X   2 134  
56 83.3 40.6   X X X X   2 34  
57 83.3 39.4   X X X X     20 SCCOOS 20m sta
58 81.7 43.5   X X X X     20 SCCOOS lat/lon approx
59 81.8 46.9   X X X X X X 578 Santa Barbara Basin 570m
60 80 50.5   X X X X     20 SCCOOS 20m
61 80 51   X X X X   X 73  
62 80 55   X X X X X X 780  
63 80 60   X X X X   X 2204  
64 80 70   X X X X X X 3631  
65 80 80   X X X X X X 4007  
66 80 90   X X X X X X 4229  
67 80 100   X X X X X X 4348  
68 76.7 100   X X X X   1 4551  
69 76.7 90   X X X X     4201  
70 76.7 80   X X X X     4235  
71 76.7 70   X X X X     4017  
72 76.7 60   X X X X     930  
73 76.7 55   X X X X     562  
74 76.7 51   X X X X     240  
75 76.7 49   X X X X   1 69  
Winter & Spring cruises often occupy stations north of Line 76.7 but seawater sampling, if performed, is reduced to chlorophylls and check samples for salts & O2s.
12-bottle CTD, 2-3 check salts, 12 oxygens, 8 chlorophylls, no nutrients, no NCOG or DIC/pH
Northern Line Station   Salinity Oxygens Nutrients Chloros NCOG DIC/pH Bottom  
76 73.3 50   2 X x X     30  
77 73.3 55   2 X x X     1003  
78 73.3 60   2 X x X     2380  
79 73.3 70   2 X x X     4072  
80 73.3 80   2 X x X     4164  
81 73.3 90   2 X x X     3186  
82 70 90   2 X   X        
83 70 80   2 X   X     4078  
84 70 70   2 X   X     3845  
85 70 60   2 X   X     3071  
86 70 55   2 X   X     1304  
87 70 51   2 X   X        
88 66.7 50   2 X   X     220  
89 66.7 55   2 X   X     2613  
90 66.7 60   2 X   X     2954  
91 66.7 70   2 X   X     3581  
92 66.7 80   2 X   X     3964  
93 66.7 90   2 X   X        
94 63.3 90   2 X   X        
95 63.3 80   2 X   X     4153  
96 63.3 70   2 X   X     3890  
97 63.3 60   2 X   X     2566  
98 63.3 55   2 X   X     301  
99 63.3 52   2 X   X     89  
100 60 53   2 X   X     87  
101 60 60   2 X   X     3298  
102 60 70   2 X   X     3999  
103 60 80   2 X   X        
104 60 90   2 X   X        
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