. 2020 Mar 27;15(3):e0230569. doi: 10.1371/journal.pone.0230569

Table 4. Mann-Whitney U-test comparing length, central tube width to Coccolith Length ratio (CT:L—Type A only), mass and thickness at the shallowest samples at each site.

Italicized font indicates p-values that could not be computed exactly due to ties and were instead computed according to a normal approximation.

`Length`
`Samples compared`	`N₁`	`N₂`	`U`	`p`
`M37/2b-31-10m (Coastal January) and P233a-600-75m (Coastal September)`	`300`	`300`	`65256`	`<0.01`
`M37/2b-50-15m (Open ocean January) and P233a-582-10m (Open ocean September)`	`300`	`288`	`55946`	`<0.01`
`M37/2b-31-10m (Coastal January) and M37/2b-50-15m (Open ocean January)`	`300`	`300`	`39996`	`0.02`
`P233a-600-75m (Coastal September) and P233a-582-10m (Open ocean September)`	`300`	`288`	`30265`	`<0.01`
`CT:L`
`Samples compared`	`N₁`	`N₂`	`U`	`p`
`M37/2b-31-10m (Coastal January) and P233a-600-75m (Coastal September)`	`30`	`30`	`600`	`0.03`
`M37/2b-50-15m (Open ocean January) and P233a-582-10m (Open ocean September)`	`30`	`24`	`27`	`<0.01`
`M37/2b-31-10m (Coastal January) and M37/2b-50-15m (Open ocean January)`	`30`	`30`	`419`	`0.65`
`P233a-600-75m (Coastal September) and P233a-582-10m (Open ocean September)`	`30`	`24`	`9`	`<0.01`
`Mass`
`Samples compared`	`N₁`	`N₂`	`U`	`p`
`M37/2b-31-10m (Coastal January) and P233a-600-75m (Coastal September)`	`143`	`424`	`43242`	`<0.01`
`M37/2b-50-15m (Open ocean January) and P233a-582-10m (Open ocean September)`	`250`	`75`	`15661`	`<0.01`
`M37/2b-31-10m (Coastal January) and M37/2b-50-15m (Open ocean January)`	`143`	`250`	`14898`	`0.01`
`P233a-600-75m (Coastal September) and P233a-582-10m (Open ocean September)`	`424`	`75`	`15537`	`0.75`
`Mean thickness`
`Samples compared`	`N₁`	`N₂`	`U`	`p`
`M37/2b-31-10m (Coastal January) and P233a-600-75m (Coastal September)`	`143`	`424`	`41909`	`<0.01`
`M37/2b-50-15m (Open ocean January) and P233a-582-10m (Open ocean September)`	`250`	`75`	`17426`	`<0.01`
`M37/2b-31-10m (Coastal January) and M37/2b-50-15m (Open ocean January)`	`143`	`250`	`15452`	`0.03`
`P233a-600-75m (Coastal September) and P233a-582-10m (Open ocean September)`	`424`	`75`	`23192`	`<0.01`