sta , lon, lat, time, Niskin,BTL_p, BTL_p_flag, BTL_t, BTL_t_flag, BTL_s, BTL_s_flag, BTL_t_draw, BTL_t_draw_flag, BTL_o, BTL_o_flag, BTL_fl, BTL_fl_flag, O2_Winkler, O2_Winkler_flag, DIC, DIC_flag, Alc, Alc_flag, NO2, NO2_flag, NO3, NO3_flag, PO4, PO4_flag, Si, Si_flag, 117, 5.37, 60.87, 2019-02-01 15:22, 1, 469.9, 0, 8.179, 0, 35.01, 1, 7.5, 0, 1.8, 1, nan, nan, 85.8, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 117, 5.37, 60.87, 2019-02-01 15:22, 2, 453.4, 0, 8.174, 0, 35.0, 1, 7.4, 0, 2.0, 1, nan, nan, 92.6, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 117, 5.37, 60.87, 2019-02-01 15:22, 5, 351.7, 0, 8.153, 0, 35.0, 1, 7.3, 0, 2.3, 1, nan, nan, 107.4, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 117, 5.37, 60.87, 2019-02-01 15:22, 9, 193.2, 0, 8.139, 0, 34.95, 1, 7.3, 0, 3.9, 1, nan, nan, 178.4, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 118, 5.553, 60.871, 2019-02-01 18:16, 1, 176.9, 0, 8.17, 0, 34.94, 1, 7.5, 0, 3.4, 1, nan, nan, 151.1, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 118, 5.553, 60.871, 2019-02-01 18:16, 2, 125.5, 0, 8.279, 0, 34.9, 1, 7.7, 0, 3.5, 1, nan, nan, 162.9, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 118, 5.553, 60.871, 2019-02-01 18:16, 3, 99.3, 0, 8.355, 0, 34.87, 1, 7.6, 0, 3.8, 1, nan, nan, 174.9, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 118, 5.553, 60.871, 2019-02-01 18:16, 4, 78.0, 0, 8.438, 0, 34.82, 1, 7.4, 0, 3.8, 1, nan, nan, 176.2, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 118, 5.553, 60.871, 2019-02-01 18:16, 5, 53.2, 0, 9.088, 0, 34.29, 1, 7.9, 0, 4.9, 1, nan, nan, 221.4, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 118, 5.553, 60.871, 2019-02-01 18:16, 6, 32.6, 0, 9.395, 0, 33.99, 1, 8.3, 0, 5.1, 1, nan, nan, 231.8, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 118, 5.553, 60.871, 2019-02-01 18:16, 7, 22.4, 0, 9.212, 0, 33.86, 1, 7.9, 0, 5.3, 1, nan, nan, 246.7, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 118, 5.553, 60.871, 2019-02-01 18:16, 8, 11.9, 0, 9.418, 0, 33.77, 1, 7.8, 0, 5.3, 1, nan, nan, 244.2, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 118, 5.553, 60.871, 2019-02-01 18:16, 9, 6.9, 0, 9.33, 0, 33.75, 1, 8.0, 0, 5.3, 1, nan, nan, 243.8, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 125, 5.409, 60.873, 2019-02-01 22:23, 1, 481.6, 0, 8.18, 0, 35.01, 1, 7.3, 0, 1.8, 1, nan, nan, 86.1, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 125, 5.409, 60.873, 2019-02-01 22:23, 2, 327.8, 0, 8.146, 0, 35.0, 1, 7.1, 0, 2.5, 1, nan, nan, 116.8, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 125, 5.409, 60.873, 2019-02-01 22:23, 4, 198.4, 0, 8.139, 0, 34.95, 1, 7.2, 0, 3.9, 1, nan, nan, 178.8, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 125, 5.409, 60.873, 2019-02-01 22:23, 5, 124.9, 0, 8.264, 0, 34.92, 1, 7.2, 0, 3.9, 1, nan, nan, 180.3, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 125, 5.409, 60.873, 2019-02-01 22:23, 6, 104.7, 0, 8.486, 0, 34.91, 1, 7.4, 0, 4.6, 1, nan, nan, 205.9, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 125, 5.409, 60.873, 2019-02-01 22:23, 7, 79.4, 0, 8.544, 0, 34.81, 1, 7.2, 0, 4.4, 1, nan, nan, 202.6, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 125, 5.409, 60.873, 2019-02-01 22:23, 8, 54.4, 0, 8.282, 0, 34.1, 1, 7.3, 0, 5.8, 1, nan, nan, 262.3, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 125, 5.409, 60.873, 2019-02-01 22:23, 9, 43.4, 0, 7.949, 0, 33.91, 1, 6.6, 0, 6.0, 1, nan, nan, 277.4, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 125, 5.409, 60.873, 2019-02-01 22:23, 10, 28.3, 0, 7.275, 0, 33.58, 1, 6.2, 0, 6.2, 1, nan, nan, 283.6, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 125, 5.409, 60.873, 2019-02-01 22:23, 11, 13.1, 0, 7.065, 0, 33.33, 1, 5.9, 0, 6.2, 1, nan, nan, 292.6, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 125, 5.409, 60.873, 2019-02-01 22:23, 12, 8.2, 0, 7.805, 0, 33.02, 1, 6.3, 0, 6.0, 1, nan, nan, 280.1, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 138, 5.411, 60.873, 2019-02-02 11:51, 1, 483.7, 0, 8.181, 0, 35.01, 1, 7.4, 0, 1.9, 1, nan, nan, 87.1, 0, 2305.5, 0, 2346.2, 0, 0.07, 0, 14.78, 0, 1.91, 0, 21.2, 0, 138, 5.411, 60.873, 2019-02-02 11:51, 2, 327.4, 0, 8.145, 0, 34.99, 1, 7.4, 0, 2.5, 1, nan, nan, 129.3, 0, 2275.2, 0, 2340.3, 0, 0.04, 0, 14.58, 0, 1.67, 0, 17.1, 0, 138, 5.411, 60.873, 2019-02-02 11:51, 4, 198.2, 0, 8.141, 0, 34.95, 1, 7.2, 0, 3.9, 1, nan, nan, 179.2, 0, 2234.8, 0, 2325.9, 0, 0.04, 0, 13.07, 0, 1.22, 0, 10.4, 0, 138, 5.411, 60.873, 2019-02-02 11:51, 5, 126.0, 0, 8.314, 0, 34.92, 1, 7.0, 0, 4.0, 1, nan, nan, 180.3, 0, 2219.5, 0, 2322.6, 0, 0.04, 0, 13.45, 0, 1.17, 0, 9.4, 0, 138, 5.411, 60.873, 2019-02-02 11:51, 6, 105.7, 0, 8.472, 0, 34.91, 1, 7.4, 0, 4.5, 1, nan, nan, 207.3, 0, 2193.3, 0, 2318.7, 0, 0.05, 0, 11.65, 0, 0.97, 0, 7.3, 0, 138, 5.411, 60.873, 2019-02-02 11:51, 7, 79.8, 0, 8.539, 0, 34.82, 1, 7.3, 0, 4.5, 1, nan, nan, 205.0, 0, 2194.5, 0, 2317.9, 0, 0.03, 0, 11.37, 0, 0.97, 0, 6.9, 0, 138, 5.411, 60.873, 2019-02-02 11:51, 8, 54.9, 0, 8.401, 0, 34.18, 1, 7.3, 0, 5.6, 1, nan, nan, 257.2, 0, 2137.1, 0, 2294.1, 0, 0.04, 0, 7.27, 0, 0.56, 0, 3.6, 0, 138, 5.411, 60.873, 2019-02-02 11:51, 9, 43.3, 0, 8.15, 0, 33.91, 1, 7.1, 0, 5.8, 1, nan, nan, 259.0, 0, 2124.5, 0, 2288.3, 0, 0.03, 0, 6.73, 0, 0.49, 0, 3.2, 0, 138, 5.411, 60.873, 2019-02-02 11:51, 10, 26.7, 0, 7.931, 0, 33.69, 1, 6.6, 0, 5.9, 1, nan, nan, 276.7, 0, 2114.9, 0, 2274.6, 0, 0.06, 0, 6.42, 0, 0.46, 0, 3.1, 0, 138, 5.411, 60.873, 2019-02-02 11:51, 11, 13.4, 0, 7.542, 0, 33.51, 1, 6.4, 0, 6.1, 1, nan, nan, 284.2, 0, 2105.0, 0, 2275.4, 0, 0.06, 0, 6.14, 0, 0.45, 0, 3.1, 0, 138, 5.411, 60.873, 2019-02-02 11:51, 12, 7.7, 0, 7.578, 0, 33.34, 1, 6.6, 0, 6.0, 1, nan, nan, 276.6, 0, 2099.5, 0, 2258.9, 0, 0.05, 0, 6.16, 0, 0.44, 0, 3.1, 0, 141, 5.213, 60.765, 2019-02-02 20:18, 1, 664.4, 0, 7.347, 0, 35.1, 1, 6.6, 0, 5.5, 1, nan, nan, 252.8, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 141, 5.213, 60.765, 2019-02-02 20:18, 2, 452.6, 0, 7.447, 0, 35.1, 1, 6.5, 0, 5.5, 1, nan, nan, 255.2, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 141, 5.213, 60.765, 2019-02-02 20:18, 3, 386.5, 0, 7.76, 0, 35.08, 1, 6.1, 0, 5.3, 1, nan, nan, 244.0, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 141, 5.213, 60.765, 2019-02-02 20:18, 4, 303.9, 0, 8.425, 0, 35.11, 1, 7.3, 0, 5.6, 1, nan, nan, 254.9, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 141, 5.213, 60.765, 2019-02-02 20:18, 5, 205.8, 0, 8.577, 0, 35.08, 1, 7.1, 0, 5.4, 1, nan, nan, 245.6, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 141, 5.213, 60.765, 2019-02-02 20:18, 6, 154.7, 0, 8.601, 0, 35.0, 1, 6.2, 0, 5.2, 1, nan, nan, 237.9, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 141, 5.213, 60.765, 2019-02-02 20:18, 7, 103.5, 0, 8.564, 0, 34.62, 1, 7.0, 0, 5.1, 1, nan, nan, 232.6, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 141, 5.213, 60.765, 2019-02-02 20:18, 8, 78.7, 0, 7.667, 0, 34.05, 1, 6.4, 0, 6.1, 1, nan, nan, 272.9, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 141, 5.213, 60.765, 2019-02-02 20:18, 9, 52.2, 0, 6.91, 0, 33.73, 1, 5.3, 0, 6.4, 1, nan, nan, 289.9, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 141, 5.213, 60.765, 2019-02-02 20:18, 10, 32.3, 0, 6.711, 0, 33.62, 1, 5.6, 0, 6.4, 1, nan, nan, 293.4, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 141, 5.213, 60.765, 2019-02-02 20:18, 11, 11.6, 0, 6.488, 0, 33.41, 1, 5.1, 0, 6.4, 1, nan, nan, 290.8, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 141, 5.213, 60.765, 2019-02-02 20:18, 12, 7.1, 0, 6.508, 0, 33.33, 1, 5.1, 0, 6.3, 1, nan, nan, 290.6, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 156, 5.341, 60.823, 2019-02-03 19:41, 1, 290.4, 0, 8.132, 0, 34.95, 1, 7.7, 0, 3.8, 1, nan, nan, 181.1, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 156, 5.341, 60.823, 2019-02-03 19:41, 2, 252.5, 0, 8.137, 0, 34.95, 1, 7.4, 0, 3.9, 1, nan, nan, 178.2, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 156, 5.341, 60.823, 2019-02-03 19:41, 3, 201.8, 0, 8.144, 0, 34.95, 1, 7.7, 0, 3.9, 1, nan, nan, 180.2, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 156, 5.341, 60.823, 2019-02-03 19:41, 4, 150.6, 0, 8.218, 0, 34.95, 1, 7.5, 0, 4.0, 1, nan, nan, 183.8, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 156, 5.341, 60.823, 2019-02-03 19:41, 5, 107.4, 0, 8.606, 0, 34.93, 1, 7.9, 0, 4.9, 1, nan, nan, 224.7, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 156, 5.341, 60.823, 2019-02-03 19:41, 6, 74.0, 0, 8.608, 0, 34.8, 1, 7.8, 0, 4.6, 1, nan, nan, 210.2, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 156, 5.341, 60.823, 2019-02-03 19:41, 7, 57.8, 0, 8.08, 0, 34.1, 1, 7.5, 0, 5.9, 1, nan, nan, 264.5, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 156, 5.341, 60.823, 2019-02-03 19:41, 8, 29.7, 0, 6.829, 0, 33.62, 1, 6.4, 0, 6.3, 1, nan, nan, 298.1, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 156, 5.341, 60.823, 2019-02-03 19:41, 9, 19.2, 0, 6.929, 0, 33.49, 1, 6.4, 0, 6.3, 1, nan, nan, 298.0, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 156, 5.341, 60.823, 2019-02-03 19:41, 10, 8.1, 0, 7.077, 0, 33.34, 1, 6.6, 0, 6.2, 1, nan, nan, 294.0, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 156, 5.341, 60.823, 2019-02-03 19:41, 11, 2.6, 0, 7.466, 0, 33.24, 1, 7.0, 0, 6.1, 1, nan, nan, 274.5, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 161, 5.473, 60.882, 2019-02-03 22:46, 1, 268.7, 0, 8.125, 0, 34.97, 1, 7.5, 0, 3.6, 1, nan, nan, 175.3, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 161, 5.473, 60.882, 2019-02-03 22:46, 2, 206.9, 0, 8.135, 0, 34.95, 1, 7.6, 0, 3.9, 1, nan, nan, 187.8, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 161, 5.473, 60.882, 2019-02-03 22:46, 4, 97.6, 0, 8.478, 0, 34.9, 1, 7.8, 0, 4.5, 1, nan, nan, 213.8, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 161, 5.473, 60.882, 2019-02-03 22:46, 5, 76.2, 0, 8.542, 0, 34.81, 1, 7.8, 0, 4.4, 1, nan, nan, 204.7, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 161, 5.473, 60.882, 2019-02-03 22:46, 6, 50.5, 0, 7.98, 0, 33.98, 1, 7.5, 0, 5.9, 1, nan, nan, 274.8, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 161, 5.473, 60.882, 2019-02-03 22:46, 7, 29.6, 0, 7.08, 0, 33.59, 1, 6.8, 0, 6.3, 1, nan, nan, 292.1, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 161, 5.473, 60.882, 2019-02-03 22:46, 8, 19.2, 0, 7.268, 0, 33.53, 1, 6.6, 0, 6.2, 1, nan, nan, 291.6, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 161, 5.473, 60.882, 2019-02-03 22:46, 9, 9.7, 0, 7.861, 0, 33.5, 1, 6.8, 0, 5.9, 1, nan, nan, 285.3, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 161, 5.473, 60.882, 2019-02-03 22:46, 10, 4.3, 0, 8.066, 0, 33.0, 1, 7.3, 0, 5.8, 1, nan, nan, 274.6, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 176, 5.343, 60.823, 2019-02-04 10:30, 1, 294.7, 0, 8.131, 0, 34.95, 1, 7.4, 0, 3.8, 1, nan, nan, 173.6, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 176, 5.343, 60.823, 2019-02-04 10:30, 2, 148.5, 0, 8.222, 0, 34.95, 1, 7.4, 0, 4.0, 1, nan, nan, 183.6, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 176, 5.343, 60.823, 2019-02-04 10:30, 4, 97.5, 0, 8.609, 0, 34.92, 1, 7.8, 0, 4.9, 1, nan, nan, 223.3, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 176, 5.343, 60.823, 2019-02-04 10:30, 6, 73.6, 0, 8.637, 0, 34.76, 1, 7.9, 0, 4.5, 1, nan, nan, 203.4, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 176, 5.343, 60.823, 2019-02-04 10:30, 8, 53.4, 0, 7.402, 0, 33.88, 1, 7.0, 0, 6.2, 1, nan, nan, 279.4, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, 176, 5.343, 60.823, 2019-02-04 10:30, 10, 7.2, 0, 6.99, 0, 33.38, 1, 6.5, 0, 6.2, 1, nan, nan, 285.1, 0, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan, nan,