,DateTime,Latitude,Longitude,Depth ,Salinity ,Temperature ,pH ,O2,O2_umol ,Total Alkalinity ,Dissolved Inorganic Carbon 
Full title:,Local time recorded in Belize (UTC -6),Latitude (north) ,Longitude (west) ,Depth of sensor platfrom ,insitu salinity ,insitu water temperature ,in situ pH (total scale) measured using a probe ,Dissolved Oxygen ,Dissolved Oxygen ,Total Alkalinity ,Dissolved Inorganic Carbon 
Units:,dd/MM/yyyy HH:mm,decimal degrees ,decimal degrees ,metres,psu,degrees celcius (°C) ,pH units - total scale ,ml/L,micro mole per litre (umol/L) ,umol/kg ,umol/kg 
Sampling protocol:,,,,,"Pumped CT-DO Sensor (SBE 37 SMP ODO MicroCAT; Seabird Scientific, Bellevue WA, US). Sensor calculates salinity from conductivity.","Pumped CT-DO Sensor (SBE 37 SMP ODO MicroCAT; Seabird Scientific, Bellevue WA, US)",Lab on chip pH sensor ,"Pumped CT-DO Sensor (SBE 37 SMP ODO MicroCAT; Seabird Scientific, Bellevue WA, US)",Calculated from ml/L O2,"Water samples were collected using a Niskin next to the sensor frame. 250ml borosilicate Duran bottles were pre-rinsed, filled with sample and poisoned with 0.1ml 7% HgCl2. ","Water samples were collected using a Niskin next to the sensor frame. 250ml borosilicate Duran bottles were pre-rinsed, filled with sample and poisoned with 0.1ml 7% HgCl2. "
Analytical protocol:,,,,,,,"Lab on chip pH sensor (now manufactured and sold by ClearWater Sensors LTD.) measures pH on the total scale using purified meta-cresol purple (mCP) indicator dye as described in Clayton and Byrne (1993). Further details in (Yin et al., 2021)",Calculated by sensor. ,,Analysed using the Dickson Total Alkalinity Titration System . Samples were weighed and mass of sample and salinity were inputted into software. Hydrochloric acid is then added. Acid was calibrated each day using CRMs (Batch 180 and 191). ,"DIC was measured by coulometry using a MARIANDA VINDTA 3C system (Mintrop, 2004). CRMs (Batches 180 and 191; Dickson, 2010) were run every ~12 samples, with an average uncertainty of ±3.0 µmol/kg. "
Data quality comments:,,,,,"Data has been quality controlled, biofouling data has been removed. Outliers have also been removed. ","Data has been quality controlled, biofouling data has been removed. Outliers have also been removed. ","Data has been quality controlled, biofouling data has been removed. Outliers have also been removed. ","Data has been quality controlled, biofouling data has been removed. Outliers have also been removed. ","Data has been quality controlled, biofouling data has been removed. Outliers have also been removed. ",,
CAS Registry Number: http://www.cas.org/content/chemical-substances/faqs,,,,,,,,,,,
Reference Material(s): Provide source(s) and batch number(s),,,,,,,,,,"A. Dickson, Scripps Institution of Oceanography Batch CRM 180 and 191 ","A. Dickson, Scripps Institution of Oceanography Batch CRM 180 and 191 "
Accuracy (if calculated):,,,,,,± 0.002 °C,,,± 3 µmol/L,± 0.8 µmol/L,
Precision (if calculated):,,,,,,,,,,,
Uncertainity (if caclulated),,,,,,,combined standard uncertainty ≤0.01 at pH 8,,,,
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