Histogram stats - Sample Cast
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     Cast 9
       Mean sigma:       26.2593       RMS: 0.0041416
       Mean theta:       19.2517       RMS: 0.017848
       Mean salinity:    36.7032       RMS: 0.0023824
       Mean Pressure:    84.7155       RMS: 3.7466
       Mean Chlorophyll: 1.2337       RMS: 1.1084