Histogram stats - Sample Cast
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     Cast 1
       Mean sigma:       26.2666       RMS: 0.0017232
       Mean theta:       19.2282       RMS: 0.007253
       Mean salinity:    36.7048       RMS: 0.0011985
       Mean Pressure:    81.1545       RMS: 7.4146
       Mean Chlorophyll: 0.54082       RMS: 0.13936