25 Jan 2000, R/V Revelle JES Winter SeaSoar Cruise (GMT) hourly-average
  hour           lat           lon     sfc_press          Wspd          Wdir          Tair          Tsea            RH          prec
     0      40.75008     134.46580    1024.97000           NaN           NaN     -10.79200       4.21323      66.72000      23.70800
     1      40.81672     134.46659    1024.28000           NaN           NaN     -10.60200       3.72717      64.42667      23.72633
     2      40.97398     134.46683    1023.34333           NaN           NaN     -10.99383       2.59332      69.37167      23.47833
     3      40.99869     134.46583    1022.93833           NaN           NaN     -11.20833       2.02642      69.49000      23.53600
     4      41.00537     134.46461    1022.15500           NaN           NaN     -10.95883       2.00707      68.72500      23.56650
     5      41.13541     134.46511    1021.17667           NaN           NaN     -10.77417       2.07453      67.73500      23.34733
     6      41.24739     134.46727    1021.71000           NaN           NaN     -10.63933       1.88870      68.12000      23.17333
     7      41.23967     134.47442    1021.68333           NaN           NaN     -10.05300       1.89107      68.28667      23.29567
     8      41.20395     134.50127    1021.83167           NaN           NaN      -9.60617       2.04392      64.81500      23.37217
     9      41.20390     134.50128    1021.98667           NaN           NaN      -9.00650       2.04157      62.39833      23.40683
    10      41.20568     134.48900    1021.98793      11.53333     148.86667      -8.55393       1.97378      60.29828      23.41586
    11      41.11869     134.46810    1022.37333      11.15000     147.18167      -8.16550       2.01533      60.61167      23.42900
    12      40.98602     134.46688    1022.67833      11.60167     144.86333      -8.00183       2.48568      61.48000      23.47183
    13      40.85337     134.46671    1022.76833      11.26500     144.43667      -7.87033       3.35198      62.58833      23.48467
    14      40.75620     134.46756    1022.61667      11.51833     151.25167      -7.63883       3.92438      64.44500      23.49183
    15      40.75639     134.47101    1022.65667      13.46167     319.77000      -7.79733       3.89145      65.40667      23.31867
    16      40.80153     134.46320    1022.45333      14.19000     308.15333      -8.21033       3.51503      71.52500      23.15550
    17      40.91249     134.47127    1022.20000      15.54667     321.88500      -8.32250       3.11693      65.84000      22.92867
    18      41.02907     134.46179    1021.52500      15.22333     323.79167      -8.88717       2.06717      68.98333      22.75233
    19      41.12099     134.46998    1021.41833      13.45667     321.52167      -9.22433       1.94355      70.53500      22.66933
    20      41.19474     134.48147    1021.31167      12.11000     313.60667      -9.61017       1.95427      65.62167      22.64283
    21      41.20460     134.49199    1021.60667       9.87000     307.54167      -9.70850       1.98302      60.30333      22.73483
    22      41.20459     134.49198    1021.88667       9.71167     252.88167      -9.81633       1.97490      65.86167      22.81850
    23      41.20078     134.49177    1022.15254       7.78983     144.06207      -9.85947       1.97578      65.33051      22.88322