Histogram stats - Sample Cast
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     Cast 13
       Mean sigma:       26.2304       RMS: 0.004512
       Mean theta:       19.3773       RMS: 0.020663
       Mean salinity:    36.7082       RMS: 0.0017868
       Mean Pressure:    90.3929       RMS: 10.5515
       Mean Chlorophyll: 0.25896       RMS: 0.25089