cast    cruise_id    year    lat        lon         mon    day    time       ISO_DateTime_UTC           yrday_utc    
1       OC471-02     2011    11.2487    -59.3483    05     18     0218.15    2011-05-18T02:18:09Z       138.09594    
2       OC471-02     2011    10.3350    -58.8973    05     19     0002.43    2011-05-19T00:02:26Z       139.00169    
3       OC471-02     2011    10.3325    -58.6292    05     19     0403.35    2011-05-19T04:03:21Z       139.16899    
4       OC471-02     2011    11.2458    -58.9342    05     19     2117.67    2011-05-19T21:17:40Z       139.88727    
5       OC471-02     2011    12.0225    -59.1973    05     20     0249.40    2011-05-20T02:49:24Z       140.11764