*2019/08/26 15:30:37.72 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/22 21:00:06.000 END TIME : UTC 2017/06/22 21:00:29.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 118 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 35.26 2 Depth metres 0.15 35.31 3 Temperature 'deg C (ITS90)' 10.237 14.074 4 Conductivity S/m 2.33727 2.81236 5 Conductance:Specific S/m 2.99419 3.98916 6 Salinity PSS-78 18.33 24.83 7 Speed:Sound m/s 1478.93 1484.24 8 Density kg/m^3 1013.337 1019.149 $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 : 2017-98 AGENCY : Canadian Hydrographic Service COUNTRY : Canada PROJECT : CHS CTD Data Acquisition SCIENTIST : Dangerfield N. *LOCATION EVENT NUMBER : 553 LATITUDE : 49 17.74338 N ! (deg min) LONGITUDE : 122 58.82864 W ! (deg min) *INSTRUMENT TYPE : SonTek CTD MODEL : CastAway SERIAL NUMBER : CC1606003 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------- ------ ---------- -------- --------- --------- READ_CHS_CTDS 1.0 2017/12/09 01:03:34 118 118 HDREDIT2 3.1.1 2017/12/13 11:33:22 ? ? CALIB 12.0 2019/08/26 15:30:37 118 118 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:03:34 -HEADER EDITS: 2017/12/13 11:33:22 Applied edit header: P:\Cruise_Data_Processing\CHS_data\test\Docs\CHS-ref-HDR.TXT Channel 1: Pressure [decibar] Format: F10.3 ==> F7.2 Channel 2: Depth [metres] Format: F10.3 ==> F7.2 Channel 3: Temperature [deg C (ITS90)] Format: F10.3 ==> F8.3 Channel 4: Conductivity [mS/cm] Format: F10.3 ==> F9.1 Channel 6: Salinity [PSS-78] Format: F10.3 ==> F7.2 Channel 8: Density [kg/m^3] Format: F10.3 ==> F9.3 Channel 5: Conductance:Specific [mS/cm] Format: F10.3 ==> F9.1 Channel 7: Speed:Sound [m/s] Format: F10.3 ==> F8.2 -CALIB parameters: 2019/08/26 15:30:37 Calibration type = Correct Mode: ONLY - calibration specs from Cal File only. Calibration file = Q:\OSD_DataProcessing\Cruise_data\conductivity-corrections\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 $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 and some quality control checks were made. Resolution and Accuracy as stated by the manufacturer is: Channel Resolution Accuracy Pressure 0.01 db 0.25 db Depth 0.01 m 0.25 m Temperature 0.01 degrees C 0.05 degrees C Conductivity 1 mS/cm 5 mS/cm Conductance:Specific 1 mS/cm 5 mS/cm Salinity 0.01 (PSS-78) 0.1 (PSS-78) Speed:Sound 0.01 m/s 0.15 m/s Density 0.004 kg/m3 0.02 kg/m3 GPS 10m Density is derived based on temperature resolution and accuracy using the International Equation of State for sea water (EOS-80). Depth and Specific Conductance are derived using the International Equation of State for sea water (EOS-80). Salinity was calculated using the 1978 Practical Salinity Scale. Sound Speed was calculated using the method of Chen-Millero, 1977. Original data file header: % Device,CC1606003 % File name,CC1606003_20170622_210006 % Cast time (UTC),2017-06-22 21:00:06 % Cast time (local),2017-06-22 21:00:06 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.295723 % Start longitude,-122.9804774 % Start altitude,-18.850000381469727 % Start GPS horizontal error(Meter),1.6399999856948853 % Start GPS vertical error(Meter),3.0699999332427979 % Start GPS number of satellites,8 % End latitude,49.2959786 % End longitude,-122.9800844 % End altitude,-17.319999694824219 % End GPS horizontal error(Meter),6.380000114440918 % End GPS vertical error(Meter),12.5 % End GPS number of satellites,7 % Cast duration (Seconds),86.2 % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2016-03-01 % Temperature calibration date,2016-02-23 % Pressure calibration date,2016-02-12 % For more information about the CastAway CTD see document "CastAway CTD Principles of Operation.pdf”. *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 14.074 2.33992 2.99419 18.33 1484.24 1013.337 0.45 0.45 13.800 2.33727 3.01198 18.44 1483.43 1013.470 0.75 0.75 13.618 2.38658 3.08997 18.96 1483.41 1013.899 1.05 1.06 13.518 2.43323 3.15855 19.41 1483.61 1014.269 1.35 1.36 13.381 2.47705 3.22692 19.87 1483.68 1014.645 1.65 1.66 13.247 2.50283 3.27192 20.16 1483.57 1014.898 1.95 1.96 13.103 2.52141 3.30868 20.41 1483.36 1015.110 2.25 2.26 12.932 2.54136 3.34985 20.68 1483.09 1015.349 2.55 2.56 12.814 2.56455 3.39098 20.95 1483.00 1015.580 2.85 2.86 12.750 2.57890 3.41578 21.11 1482.97 1015.719 3.15 3.17 12.666 2.60815 3.46217 21.42 1483.05 1015.974 3.45 3.46 12.488 2.62787 3.50493 21.70 1482.77 1016.222 3.75 3.77 12.311 2.64082 3.53893 21.92 1482.41 1016.423 4.05 4.07 12.201 2.64688 3.55749 22.04 1482.17 1016.535 4.35 4.37 12.137 2.65337 3.57237 22.14 1482.06 1016.622 4.65 4.67 12.068 2.66268 3.59160 22.27 1481.97 1016.733 4.95 4.97 12.016 2.67655 3.61538 22.42 1481.98 1016.865 5.25 5.27 11.956 2.68334 3.63041 22.52 1481.89 1016.952 5.55 5.57 11.895 2.69070 3.64645 22.63 1481.80 1017.045 5.85 5.87 11.858 2.69421 3.65481 22.68 1481.74 1017.095 6.15 6.17 11.832 2.69470 3.65810 22.70 1481.68 1017.116 6.45 6.47 11.816 2.70106 3.66830 22.77 1481.71 1017.173 6.75 6.77 11.787 2.70745 3.67994 22.85 1481.70 1017.239 7.05 7.07 11.737 2.70732 3.68468 22.88 1481.57 1017.271 7.35 7.38 11.711 2.70706 3.68703 22.89 1481.49 1017.287 7.65 7.68 11.701 2.70933 3.69106 22.92 1481.49 1017.311 7.95 7.98 11.691 2.70900 3.69168 22.92 1481.46 1017.317 8.25 8.28 11.678 2.70998 3.69428 22.94 1481.44 1017.333 8.55 8.58 11.662 2.71098 3.69725 22.96 1481.42 1017.352 8.85 8.88 11.644 2.71318 3.70204 22.99 1481.39 1017.380 9.15 9.18 11.624 2.71350 3.70451 23.00 1481.35 1017.397 9.45 9.48 11.606 2.71523 3.70869 23.03 1481.32 1017.422 9.75 9.78 11.591 2.71708 3.71279 23.06 1481.30 1017.447 10.05 10.08 11.577 2.71798 3.71541 23.07 1481.28 1017.463 10.35 10.38 11.566 2.71864 3.71744 23.09 1481.26 1017.477 10.65 10.68 11.550 2.71967 3.72052 23.11 1481.23 1017.496 10.95 10.98 11.532 2.72067 3.72369 23.13 1481.19 1017.516 11.25 11.28 11.514 2.72222 3.72762 23.15 1481.16 1017.540 11.55 11.58 11.491 2.72387 3.73229 23.18 1481.12 1017.568 11.85 11.88 11.468 2.72791 3.74016 23.23 1481.11 1017.614 12.15 12.18 11.445 2.73049 3.74608 23.27 1481.08 1017.649 12.45 12.48 11.422 2.73198 3.75047 23.30 1481.03 1017.675 12.75 12.79 11.395 2.73496 3.75727 23.35 1480.99 1017.715 13.05 13.09 11.371 2.73761 3.76346 23.39 1480.96 1017.752 13.35 13.39 11.342 2.73907 3.76849 23.42 1480.90 1017.783 13.65 13.69 11.303 2.74319 3.77818 23.48 1480.84 1017.839 13.95 13.99 11.273 2.74500 3.78382 23.52 1480.78 1017.874 14.25 14.29 11.248 2.74811 3.79070 23.56 1480.75 1017.914 14.55 14.59 11.222 2.75142 3.79803 23.61 1480.72 1017.957 14.85 14.89 11.202 2.75157 3.80035 23.62 1480.66 1017.972 15.15 15.19 11.179 2.75113 3.80211 23.64 1480.60 1017.985 15.45 15.49 11.165 2.75761 3.81254 23.70 1480.64 1018.043 15.75 15.79 11.147 2.76193 3.82039 23.76 1480.64 1018.088 16.05 16.09 11.125 2.75990 3.81993 23.75 1480.56 1018.089 16.35 16.39 11.106 2.75824 3.81962 23.75 1480.49 1018.090 16.65 16.69 11.080 2.76051 3.82549 23.79 1480.45 1018.125 16.95 16.99 11.055 2.76241 3.83083 23.82 1480.41 1018.157 17.25 17.29 11.042 2.76661 3.83804 23.87 1480.42 1018.198 17.55 17.59 11.039 2.76785 3.84008 23.88 1480.43 1018.210 17.85 17.89 11.038 2.76704 3.83906 23.88 1480.42 1018.206 18.15 18.19 11.036 2.76738 3.83976 23.88 1480.43 1018.212 18.45 18.49 11.034 2.76734 3.83995 23.88 1480.42 1018.214 18.75 18.79 11.025 2.76742 3.84095 23.89 1480.41 1018.222 19.05 19.09 11.011 2.76699 3.84189 23.89 1480.37 1018.229 19.35 19.39 10.995 2.76713 3.84377 23.90 1480.33 1018.242 19.65 19.69 10.974 2.76955 3.84936 23.94 1480.30 1018.275 19.95 19.99 10.949 2.77741 3.86298 24.03 1480.32 1018.351 20.25 20.29 10.907 2.78054 3.87190 24.09 1480.24 1018.404 20.55 20.59 10.879 2.78020 3.87441 24.10 1480.17 1018.421 20.85 20.89 10.822 2.77826 3.87789 24.12 1479.99 1018.446 21.15 21.20 10.778 2.78173 3.88750 24.18 1479.91 1018.502 21.45 21.50 10.756 2.78383 3.89283 24.22 1479.87 1018.534 21.75 21.80 10.739 2.78430 3.89534 24.23 1479.84 1018.550 22.05 22.10 10.726 2.78481 3.89746 24.25 1479.81 1018.564 22.35 22.40 10.710 2.78557 3.90023 24.27 1479.78 1018.581 22.65 22.70 10.686 2.78594 3.90346 24.29 1479.72 1018.602 22.95 23.00 10.651 2.78516 3.90610 24.30 1479.62 1018.620 23.25 23.30 10.621 2.78365 3.90728 24.31 1479.52 1018.630 23.55 23.60 10.600 2.78016 3.90467 24.29 1479.42 1018.619 23.85 23.90 10.578 2.77772 3.90366 24.28 1479.34 1018.617 24.15 24.20 10.546 2.78053 3.91115 24.33 1479.28 1018.661 24.45 24.50 10.526 2.78792 3.92378 24.41 1479.31 1018.731 24.75 24.80 10.521 2.79037 3.92783 24.44 1479.33 1018.755 25.05 25.10 10.518 2.79112 3.92921 24.45 1479.34 1018.764 25.35 25.40 10.514 2.79229 3.93122 24.46 1479.35 1018.776 25.65 25.70 10.511 2.79296 3.93251 24.47 1479.35 1018.784 25.95 26.00 10.509 2.79357 3.93366 24.48 1479.35 1018.792 26.25 26.30 10.503 2.79519 3.93658 24.50 1479.36 1018.809 26.55 26.60 10.495 2.79632 3.93900 24.51 1479.36 1018.824 26.85 26.90 10.485 2.79724 3.94147 24.53 1479.34 1018.839 27.15 27.20 10.472 2.79900 3.94537 24.55 1479.33 1018.863 27.45 27.50 10.460 2.79963 3.94759 24.57 1479.31 1018.877 27.75 27.80 10.450 2.80017 3.94951 24.58 1479.29 1018.889 28.05 28.10 10.440 2.80126 3.95209 24.59 1479.28 1018.905 28.35 28.40 10.425 2.80345 3.95690 24.63 1479.27 1018.933 28.65 28.70 10.400 2.80509 3.96197 24.66 1479.22 1018.963 28.95 29.00 10.372 2.80726 3.96819 24.70 1479.17 1019.000 29.25 29.30 10.359 2.80813 3.97090 24.72 1479.15 1019.017 29.55 29.60 10.342 2.80807 3.97268 24.73 1479.11 1019.029 29.85 29.90 10.329 2.80753 3.97344 24.73 1479.07 1019.035 30.15 30.20 10.317 2.80728 3.97440 24.74 1479.03 1019.043 30.45 30.50 10.308 2.80757 3.97589 24.75 1479.02 1019.053 30.75 30.80 10.304 2.80756 3.97623 24.75 1479.01 1019.056 31.05 31.10 10.302 2.80955 3.97932 24.77 1479.03 1019.074 31.35 31.40 10.301 2.81070 3.98099 24.78 1479.05 1019.084 31.65 31.70 10.301 2.81129 3.98184 24.79 1479.06 1019.090 31.95 32.00 10.304 2.81198 3.98253 24.79 1479.08 1019.095 32.25 32.30 10.305 2.81172 3.98201 24.79 1479.09 1019.093 32.55 32.60 10.302 2.81188 3.98261 24.79 1479.08 1019.098 32.85 32.90 10.295 2.81219 3.98389 24.80 1479.07 1019.107 33.15 33.20 10.291 2.81203 3.98411 24.80 1479.06 1019.110 33.45 33.50 10.285 2.81223 3.98499 24.80 1479.06 1019.116 33.75 33.80 10.279 2.81236 3.98588 24.81 1479.04 1019.123 34.05 34.10 10.272 2.81120 3.98504 24.80 1479.01 1019.120 34.35 34.40 10.268 2.81162 3.98612 24.81 1479.01 1019.127 34.65 34.70 10.263 2.81060 3.98516 24.80 1478.99 1019.124 34.95 35.00 10.237 2.81132 3.98916 24.83 1478.93 1019.149 35.26 35.31 10.237 2.81068 3.98822 24.82 1478.93 1019.145