*2019/08/26 15:30:33.02 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 18:03:58.000 END TIME : UTC 2017/03/03 18:04:11.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 67 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 19.85 2 Depth metres 0.15 19.83 3 Temperature 'deg C (ITS90)' 7.317 7.629 4 Conductivity S/m 2.66713 2.86811 5 Conductance:Specific S/m 4.12646 4.39671 6 Salinity PSS-78 25.45 27.33 7 Speed:Sound m/s 1468 1471.86 8 Density kg/m^3 1019.872 1021.395 $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 : 324 LATITUDE : 49 18.05436 N ! (deg min) LONGITUDE : 123 3.68557 W ! (deg min) *INSTRUMENT TYPE : SonTek CTD MODEL : CastAway SERIAL NUMBER : CC1545005 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------- ------ ---------- -------- --------- --------- READ_CHS_CTDS 1.0 2017/12/08 21:16:09 67 67 HDREDIT2 3.1.1 2017/12/13 11:33:18 ? ? CALIB 12.0 2019/08/26 15:30:33 67 67 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:16:09 -HEADER EDITS: 2017/12/13 11:33:18 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 15:30:33 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,CC1545005 % File name,CC1545005_20170303_180358 % Cast time (UTC),2017-03-03 18:03:58 % Cast time (local),2017-03-03 18:03:58 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.300906 % Start longitude,-123.0614262 % Start altitude,-14.539999961853027 % Start GPS horizontal error(Meter),18.829999923706055 % Start GPS vertical error(Meter),28.950000762939453 % Start GPS number of satellites,5 % End latitude,49.3009364 % End longitude,-123.0613221 % End altitude,-7.2100000381469727 % End GPS horizontal error(Meter),5.4600000381469727 % End GPS vertical error(Meter),8.9399995803833 % End GPS number of satellites,5 % Cast duration (Seconds),58 % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2015-11-20 % Temperature calibration date,2015-11-19 % Pressure calibration date,2015-11-17 % 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 7.317 2.66713 4.12646 25.45 1468.00 1019.872 0.45 0.45 7.340 2.68216 4.14684 25.59 1468.27 1019.981 0.75 0.75 7.359 2.70219 4.17532 25.79 1468.59 1020.134 1.05 1.05 7.365 2.72794 4.21436 26.05 1468.95 1020.343 1.35 1.35 7.365 2.73700 4.22840 26.15 1469.07 1020.420 1.65 1.65 7.364 2.74550 4.24160 26.24 1469.19 1020.491 1.95 1.95 7.366 2.75193 4.25127 26.31 1469.28 1020.544 2.25 2.25 7.368 2.75223 4.25146 26.31 1469.30 1020.547 2.55 2.55 7.368 2.75424 4.25454 26.33 1469.33 1020.565 2.85 2.85 7.366 2.75907 4.26224 26.38 1469.39 1020.607 3.15 3.15 7.364 2.75791 4.26072 26.37 1469.37 1020.600 3.45 3.45 7.362 2.75940 4.26333 26.39 1469.39 1020.615 3.75 3.75 7.364 2.76179 4.26682 26.41 1469.43 1020.635 4.05 4.05 7.363 2.76509 4.27197 26.45 1469.48 1020.664 4.35 4.34 7.368 2.76926 4.27784 26.49 1469.55 1020.697 4.65 4.64 7.374 2.77412 4.28445 26.53 1469.64 1020.733 4.95 4.95 7.378 2.77549 4.28610 26.54 1469.67 1020.744 5.25 5.24 7.379 2.77628 4.28710 26.55 1469.69 1020.750 5.55 5.54 7.381 2.77702 4.28802 26.56 1469.71 1020.756 5.85 5.84 7.383 2.77745 4.28839 26.56 1469.73 1020.760 6.15 6.14 7.383 2.77642 4.28680 26.55 1469.72 1020.752 6.45 6.44 7.385 2.77684 4.28725 26.55 1469.73 1020.756 6.75 6.74 7.386 2.77750 4.28805 26.56 1469.75 1020.762 7.05 7.04 7.388 2.77772 4.28818 26.56 1469.76 1020.764 7.35 7.34 7.389 2.77849 4.28924 26.57 1469.78 1020.771 7.65 7.64 7.391 2.77945 4.29041 26.57 1469.81 1020.778 7.95 7.94 7.394 2.77889 4.28920 26.57 1469.81 1020.773 8.25 8.24 7.396 2.78000 4.29064 26.58 1469.84 1020.782 8.55 8.54 7.399 2.78061 4.29125 26.58 1469.86 1020.786 8.85 8.84 7.400 2.78082 4.29144 26.58 1469.87 1020.789 9.15 9.14 7.403 2.78154 4.29216 26.59 1469.89 1020.794 9.45 9.44 7.408 2.78191 4.29202 26.59 1469.91 1020.794 9.75 9.74 7.414 2.78257 4.29224 26.59 1469.95 1020.797 10.05 10.04 7.418 2.78425 4.29425 26.60 1469.99 1020.809 10.35 10.34 7.422 2.78435 4.29392 26.60 1470.00 1020.808 10.65 10.64 7.429 2.78356 4.29175 26.59 1470.02 1020.798 10.95 10.94 7.443 2.78774 4.29636 26.62 1470.12 1020.823 11.25 11.24 7.459 2.79296 4.30235 26.66 1470.24 1020.856 11.55 11.54 7.469 2.79487 4.30388 26.68 1470.30 1020.866 11.85 11.84 7.475 2.79532 4.30386 26.68 1470.33 1020.867 12.15 12.13 7.482 2.79796 4.30699 26.70 1470.39 1020.885 12.45 12.43 7.487 2.80105 4.31100 26.73 1470.45 1020.908 12.75 12.73 7.493 2.80240 4.31230 26.73 1470.49 1020.916 13.05 13.03 7.500 2.80363 4.31326 26.74 1470.53 1020.922 13.35 13.33 7.505 2.80478 4.31439 26.75 1470.56 1020.929 13.65 13.63 7.509 2.80689 4.31714 26.77 1470.61 1020.945 13.95 13.93 7.512 2.80780 4.31812 26.78 1470.63 1020.952 14.25 14.23 7.516 2.80764 4.31736 26.77 1470.65 1020.949 14.55 14.53 7.516 2.80855 4.31873 26.78 1470.66 1020.957 14.85 14.83 7.516 2.80898 4.31940 26.79 1470.67 1020.962 15.15 15.13 7.517 2.80942 4.31992 26.79 1470.69 1020.966 15.45 15.43 7.521 2.81030 4.32070 26.80 1470.72 1020.972 15.75 15.73 7.526 2.81234 4.32318 26.81 1470.76 1020.986 16.05 16.03 7.530 2.81486 4.32659 26.84 1470.81 1021.006 16.35 16.33 7.535 2.82022 4.33417 26.89 1470.90 1021.048 16.65 16.63 7.540 2.82306 4.33784 26.91 1470.96 1021.068 16.95 16.93 7.547 2.82745 4.34365 26.95 1471.04 1021.101 17.25 17.23 7.560 2.83204 4.34902 26.99 1471.14 1021.131 17.55 17.53 7.573 2.83652 4.35412 27.03 1471.24 1021.159 17.85 17.82 7.573 2.84228 4.36289 27.09 1471.33 1021.207 18.15 18.12 7.565 2.84450 4.36735 27.12 1471.34 1021.233 18.45 18.42 7.571 2.85590 4.38418 27.23 1471.50 1021.324 18.75 18.72 7.592 2.86210 4.39086 27.28 1471.65 1021.361 19.05 19.02 7.607 2.86555 4.39406 27.31 1471.74 1021.379 19.35 19.32 7.616 2.86806 4.39671 27.33 1471.81 1021.395 19.65 19.62 7.623 2.86777 4.39528 27.32 1471.83 1021.388 19.85 19.83 7.629 2.86811 4.39497 27.32 1471.86 1021.387