ULMData: Measurements from acoustic array
	-time: UTC+1
	-depth: water depth (m)
	-temp: water temperature (degrees C)
	-sat: dissolved oxygen saturation (%)
	-domg: dissolved oxygen concentration (mg/L)
	-par: photosynthetically active radiation - irradiance (umol photons/m2/sec)
	-TL: Transmission loss, which represents the decrease in acoustic intensity as a sound wave propagates outwards from a source, was calculated from the signal receptions broadcast and recorded by the acoustic observatory. The received signal time series includes reflections from the waveguide boundaries, as well as spreading loss and attenuation from propagation through free bubbles and seagrass leaves and other losses. Frequency-dependent TL was calculated by subtracting the spectrum of the signal impulse response measured
in the seagrass meadow from the spectrum of the source impulse response obtained from the calibration measurements. The following analysis reports TL using measurements from the closest hydrophone located 1.5 m from the source since it had positive SNRs for most of the measurements. For this receiver, negative SNR was only observed
occasionally (<10% of the time on average) in the afternoons of warmer months for frequencies between 5 and 25 kHz
	-Ambient Sound: To quantify the frequency dependence of ambient sound for each recording, the 25th percentile level was calculated from the power spectral density
calculated using an integration time of 0.128 s. The 25th percentile level was averaged over all four hydrophone channels. Working with the low percentiles of ambient sound
effectively filters out the loud transient events (Kinda et al., 2013), allowing the analysis to focus on the “background” sound level (Roth et al., 2012).
