*2026/01/16 10:37:58.93 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/23 00:44:40.000 END TIME : UTC 2025/07/23 00:45:04.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 122 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 36.41 2 Depth metres 0.15 36.23 3 Temperature 'deg C (ITS90)' 8.801 17.658 4 Conductivity S/m 3.44874 4.01672 5 Conductance:Specific S/m 4.65466 5.10514 6 Salinity PSS-78 30.02 32.42 7 Speed:Sound m/s 1482.88 1509.56 8 Density kg/m^3 1021.577 1025.292 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 7 F R4 2 2 -99 ' ' 7 F R4 2 3 -99 ' ' 8 F R4 3 4 -99 ' ' 10 F R4 5 5 -99 ' ' 10 F R4 5 6 -99 ' ' 7 F R4 2 7 -99 ' ' 8 F R4 2 8 -99 ' ' 9 F R4 3 $END *ADMINISTRATION MISSION : 2025-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 235 LATITUDE : 49 41.87790 N ! (deg min) LONGITUDE : 126 37.91410 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250723_004440 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:35 122 122 MERGEHDR 1.3 2026/01/16 10:35:48 122 122 HDREDIT2 3.2 2026/01/16 10:36:19 ? ? REMOVECH 8.2 2026/01/16 10:36:52 122 122 CALIB 12.1 2026/01/16 10:37:22 122 122 CLEAN 5.3 2026/01/16 10:37:58 122 122 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:19 Applied edit header: C:\Users\huntingtons\Desktop\Misc_Projects\Castaway\castaway2023_HDR.txt Channel 2: Depth [metres] Format: F10.6 ==> F7.2 Channel 3: Temperature [deg C (ITS90)] Format: F14.6 ==> F8.3 Channel 4: Conductivity [mS/cm] Units: ms/cm ==> mS/cm Format: F14.6 ==> F9.1 Channel 5: Conductance:Specific [mS/cm] Name: Specific Conductance ==> Conductance:Specific Units: ms/cm ==> mS/cm Format: F14.6 ==> F9.1 Channel 6: Salinity [PSS-78] Format: F14.6 ==> F7.2 Channel 7: Speed:Sound [m/s] Name: Sound Velocity ==> Speed:Sound Format: F14.6 ==> F8.2 Channel 8: Density [kg/m^3] Format: F14.6 ==> F9.3 -REMOVECH 2026/01/16 10:36:52 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:22 Calibration type = Correct Mode: ONLY - calibration specs from Cal File only. Calibration file = C:\Users\huntingtons\Desktop\Misc_Projects\Castaway\recal-cond.CCF Calibrations applied: Ch Name Units Fmla Coefficents -- ----------------------------- --------- --- ----------------------------- 4 Conductivity S/m 10 0.0000000E+00 0.1000000E-03 5 Conductance:Specific S/m 10 0.0000000E+00 0.1000000E-03 -CLEAN functions: 2026/01/16 10:37:42 20 Reset #RECS, MIN & MAX values in header. Set header Start and End times from the data. $END *COMMENTS Data Processing Notes: The CastAway-CTD is a small profiling instrument that measures conductivity, temperature, and pressure. Its embedded firmware controls all of the instrument's functions. It is designed for profiling to depths of up to 100m at 5 Hz. It uses a six electrode flow-through conductivity cell with zero external field coupled with a rapid response thermistor (<5Hz) to attain high measurement accuracies. The instrument does not require a pump and is hydrodynamically designed to free fall rate of 1 m/s. Processing was done using the CastAway CTD data processing system which included the following steps: - Pressure correction to remove ambient atmospheric pressure. - Removal of records obtained while the system was stationary. - De-spiking of conductivity data to remove erratic measurements near the water surface that can be caused by air bubbles trapped in the conductivity flow cell. - Bin-averaging with 0.3db bins with linear interpolation used to fill empty bins or the nearest available value for surface or bottom bins. - Combination of downcast and upcast data using a weighted average based on fall velocity. - Derivation of specific conductance, salinity, sound speed, density and depth for each pressure bin. The data were converted to IOS Header format. Calibration dates were taken from the original data file header: % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2020-03-13 % Temperature calibration date,2020-03-12 % Pressure calibration date,2020-03-04 % *CALIBRATION $TABLE: CORRECTED CHANNELS ! Name Units Fmla Pad Coefficients ! ---------------------- ----- ---- ------ ------------ Conductivity S/m 10 -99 () (0 0.1E-03) Conductance:Specific S/m 10 -99 () (0 0.1E-03) $END !--1--- --2--- ---3--- ----4---- ----5---- --6--- ---7--- ---8---- !Pressu Depth Tempera Conductiv Conductan Salini Speed: Density !re ture ity ce: ty Sound ! Specific !------ ------ ------- --------- --------- ------ ------- -------- *END OF HEADER 0.15 0.15 17.658 4.01672 4.70800 30.41 1509.56 1021.841 0.45 0.45 17.520 3.95828 4.65466 30.02 1508.71 1021.577 0.75 0.75 17.387 3.94958 4.65900 30.04 1508.34 1021.628 1.05 1.05 17.242 3.99641 4.73042 30.55 1508.49 1022.051 1.35 1.35 17.048 3.98120 4.73408 30.56 1507.92 1022.109 1.65 1.65 16.953 3.97362 4.73583 30.57 1507.65 1022.138 1.95 1.95 16.839 3.96134 4.73404 30.55 1507.28 1022.151 2.25 2.24 16.415 3.94563 4.76349 30.74 1506.20 1022.393 2.55 2.54 16.053 3.90951 4.76153 30.71 1505.05 1022.448 2.85 2.84 15.636 3.87498 4.76786 30.73 1503.77 1022.556 3.15 3.14 15.058 3.83072 4.78142 30.79 1502.01 1022.727 3.45 3.44 14.576 3.78948 4.78757 30.79 1500.48 1022.838 3.75 3.74 14.061 3.76886 4.82428 31.02 1499.07 1023.117 4.05 4.04 13.692 3.75975 4.85859 31.23 1498.11 1023.360 4.35 4.34 13.447 3.74671 4.87258 31.31 1497.39 1023.471 4.65 4.64 13.270 3.73172 4.87549 31.32 1496.82 1023.512 4.95 4.93 13.145 3.72102 4.87741 31.32 1496.41 1023.539 5.25 5.23 13.019 3.70856 4.87729 31.31 1495.97 1023.556 5.55 5.53 12.911 3.69857 4.87794 31.30 1495.61 1023.574 5.85 5.83 12.792 3.69256 4.88539 31.35 1495.26 1023.631 6.15 6.13 12.669 3.68441 4.89048 31.37 1494.88 1023.675 6.45 6.43 12.558 3.68003 4.89909 31.42 1494.57 1023.737 6.75 6.73 12.451 3.67488 4.90622 31.46 1494.26 1023.790 7.05 7.03 12.365 3.67055 4.91171 31.49 1494.01 1023.831 7.35 7.32 12.310 3.66555 4.91233 31.49 1493.82 1023.842 7.65 7.62 12.255 3.66171 4.91435 31.50 1493.65 1023.860 7.95 7.92 12.211 3.65802 4.91524 31.50 1493.50 1023.871 8.25 8.22 12.138 3.65422 4.91982 31.53 1493.29 1023.906 8.55 8.52 12.003 3.64434 4.92439 31.55 1492.85 1023.947 8.85 8.82 11.912 3.63744 4.92711 31.56 1492.56 1023.972 9.15 9.12 11.869 3.63111 4.92431 31.53 1492.38 1023.963 9.45 9.41 11.808 3.62507 4.92431 31.53 1492.17 1023.970 9.75 9.71 11.730 3.62229 4.93100 31.56 1491.95 1024.016 10.05 10.01 11.651 3.62034 4.93896 31.61 1491.74 1024.069 10.35 10.31 11.567 3.61628 4.94472 31.64 1491.49 1024.111 10.65 10.61 11.471 3.61535 4.95648 31.72 1491.25 1024.186 10.95 10.91 11.388 3.60245 4.95010 31.66 1490.89 1024.160 11.25 11.21 11.315 3.59543 4.95031 31.66 1490.64 1024.169 11.55 11.50 11.221 3.58964 4.95514 31.68 1490.34 1024.205 11.85 11.80 11.137 3.58571 4.96128 31.71 1490.09 1024.248 12.15 12.10 11.078 3.58954 4.97474 31.80 1489.99 1024.329 12.45 12.40 11.022 3.58785 4.98009 31.83 1489.84 1024.364 12.75 12.70 10.990 3.57618 4.96830 31.75 1489.63 1024.303 13.05 13.00 10.925 3.57151 4.97085 31.76 1489.41 1024.324 13.35 13.30 10.868 3.56697 4.97235 31.76 1489.22 1024.338 13.65 13.59 10.811 3.56380 4.97592 31.78 1489.04 1024.364 13.95 13.89 10.747 3.55906 4.97813 31.79 1488.83 1024.383 14.25 14.19 10.702 3.55777 4.98262 31.81 1488.71 1024.412 14.55 14.49 10.675 3.56009 4.98960 31.86 1488.67 1024.454 14.85 14.79 10.637 3.55899 4.99344 31.88 1488.57 1024.480 15.15 15.09 10.585 3.55713 4.99812 31.91 1488.42 1024.511 15.45 15.39 10.544 3.55384 4.99928 31.91 1488.28 1024.521 15.75 15.68 10.515 3.54952 4.99720 31.89 1488.16 1024.513 16.05 15.98 10.474 3.54547 4.99721 31.89 1488.02 1024.518 16.35 16.28 10.418 3.54079 4.99862 31.89 1487.82 1024.531 16.65 16.58 10.379 3.53709 4.99892 31.89 1487.68 1024.537 16.95 16.88 10.347 3.53645 5.00243 31.91 1487.60 1024.560 17.25 17.18 10.300 3.53449 5.00629 31.93 1487.47 1024.586 17.55 17.47 10.247 3.53122 5.00925 31.95 1487.29 1024.607 17.85 17.77 10.218 3.52971 5.01125 31.96 1487.21 1024.621 18.15 18.07 10.194 3.53224 5.01819 32.00 1487.18 1024.662 18.45 18.37 10.173 3.53323 5.02258 32.03 1487.15 1024.689 18.75 18.67 10.158 3.53299 5.02451 32.04 1487.11 1024.702 19.05 18.97 10.138 3.53101 5.02450 32.04 1487.04 1024.705 19.35 19.27 10.103 3.52707 5.02383 32.03 1486.91 1024.705 19.65 19.56 10.072 3.52530 5.02583 32.04 1486.81 1024.719 19.95 19.86 10.072 3.52491 5.02518 32.04 1486.81 1024.717 20.25 20.16 10.052 3.52163 5.02341 32.02 1486.73 1024.709 20.55 20.46 10.009 3.51992 5.02714 32.04 1486.60 1024.734 20.85 20.76 9.973 3.51893 5.03098 32.06 1486.50 1024.759 21.15 21.06 9.947 3.51737 5.03236 32.07 1486.42 1024.769 21.45 21.35 9.926 3.51177 5.02739 32.03 1486.30 1024.745 21.75 21.65 9.898 3.51055 5.02978 32.04 1486.22 1024.761 22.05 21.95 9.860 3.50947 5.03361 32.07 1486.12 1024.785 22.35 22.25 9.811 3.50624 5.03609 32.08 1485.96 1024.803 22.65 22.55 9.736 3.50278 5.04196 32.11 1485.73 1024.841 22.95 22.85 9.659 3.49603 5.04347 32.11 1485.45 1024.855 23.25 23.14 9.615 3.49052 5.04196 32.09 1485.27 1024.851 23.55 23.44 9.563 3.48761 5.04533 32.11 1485.11 1024.873 23.85 23.74 9.502 3.48576 5.05155 32.14 1484.93 1024.912 24.15 24.04 9.467 3.48523 5.05583 32.17 1484.84 1024.939 24.45 24.34 9.455 3.48560 5.05813 32.18 1484.82 1024.953 24.75 24.64 9.446 3.48388 5.05708 32.17 1484.78 1024.950 25.05 24.93 9.430 3.48266 5.05753 32.18 1484.73 1024.954 25.35 25.23 9.409 3.48241 5.06026 32.19 1484.68 1024.971 25.65 25.53 9.388 3.48087 5.06124 32.20 1484.61 1024.979 25.95 25.83 9.370 3.48069 5.06359 32.21 1484.56 1024.994 26.25 26.13 9.362 3.47923 5.06266 32.20 1484.53 1024.991 26.55 26.43 9.350 3.47859 5.06341 32.21 1484.50 1024.997 26.85 26.72 9.334 3.47849 5.06565 32.22 1484.46 1025.011 27.15 27.02 9.328 3.47800 5.06582 32.22 1484.44 1025.014 27.45 27.32 9.323 3.47758 5.06594 32.22 1484.43 1025.016 27.75 27.62 9.309 3.47707 5.06725 32.23 1484.39 1025.025 28.05 27.92 9.299 3.47625 5.06758 32.23 1484.36 1025.029 28.35 28.22 9.296 3.47685 5.06893 32.24 1484.36 1025.037 28.65 28.51 9.289 3.47601 5.06870 32.23 1484.34 1025.038 28.95 28.81 9.286 3.47525 5.06798 32.23 1484.33 1025.035 29.25 29.11 9.284 3.47516 5.06817 32.23 1484.33 1025.038 29.55 29.41 9.271 3.47491 5.06979 32.24 1484.29 1025.048 29.85 29.71 9.254 3.47402 5.07102 32.24 1484.24 1025.057 30.15 30.01 9.239 3.47312 5.07187 32.25 1484.20 1025.064 30.45 30.30 9.225 3.47215 5.07260 32.25 1484.15 1025.070 30.75 30.60 9.203 3.47104 5.07416 32.26 1484.09 1025.081 31.05 30.90 9.182 3.47024 5.07616 32.27 1484.03 1025.094 31.35 31.20 9.165 3.46879 5.07651 32.27 1483.97 1025.098 31.65 31.50 9.145 3.46797 5.07827 32.28 1483.91 1025.110 31.95 31.80 9.129 3.46661 5.07871 32.28 1483.86 1025.114 32.25 32.09 9.113 3.46646 5.08089 32.29 1483.82 1025.128 32.55 32.39 9.096 3.46589 5.08261 32.30 1483.77 1025.140 32.85 32.69 9.108 3.46589 5.08077 32.29 1483.81 1025.130 33.15 32.99 9.119 3.46596 5.07926 32.28 1483.84 1025.123 33.45 33.29 9.114 3.46440 5.07774 32.27 1483.82 1025.116 33.75 33.59 9.094 3.46310 5.07880 32.27 1483.75 1025.124 34.05 33.88 9.065 3.46046 5.07928 32.27 1483.65 1025.129 34.35 34.18 9.036 3.45784 5.07962 32.27 1483.55 1025.133 34.65 34.48 8.997 3.45679 5.08395 32.30 1483.44 1025.160 34.95 34.78 8.950 3.45495 5.08835 32.32 1483.29 1025.188 35.25 35.08 8.914 3.45274 5.09049 32.33 1483.18 1025.202 35.55 35.38 8.878 3.45189 5.09461 32.35 1483.08 1025.227 35.85 35.67 8.849 3.45141 5.09820 32.37 1483.00 1025.250 36.15 35.97 8.830 3.44874 5.09715 32.36 1482.92 1025.246 36.41 36.23 8.801 3.45121 5.10514 32.42 1482.88 1025.292