SPO4

• Label: Soluble phosphate
• Definition: Soluble phosphate, or SRP (soluble reactive phosphate) measured at the observation depth.
• Type: Physical quantity
• Unit: microgramsPerLiter
• Maximum: 33
• Minimum: 0
• Precision: .1
• Missing values: None specified

,
TP

• Label: Total phosphate
• Definition: Total phosphate measured at the depth of the observation.
• Type: Physical quantity
• Unit: microgramsPerLiter
• Maximum: 50
• Minimum: 7
• Precision: .1
• Missing values: None specified