*2019/08/26 15:30:32.71 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 00:33:21.000 END TIME : UTC 2017/03/03 00:33:35.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 73 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 21.9 2 Depth metres 0.15 21.86 3 Temperature 'deg C (ITS90)' 7.467 7.617 4 Conductivity S/m 2.77253 2.87024 5 Conductance:Specific S/m 4.2696 4.39995 6 Salinity PSS-78 26.45 27.35 7 Speed:Sound m/s 1469.83 1471.88 8 Density kg/m^3 1020.636 1021.423 $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 : 319 LATITUDE : 49 17.86945 N ! (deg min) LONGITUDE : 123 3.60686 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 21:11:10 73 73 HDREDIT2 3.1.1 2017/12/13 11:33:18 ? ? CALIB 12.0 2019/08/26 15:30:32 73 73 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:11:09 -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 15:30:32 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_003321 % Cast time (UTC),2017-03-03 00:33:21 % Cast time (local),2017-03-03 00:33:21 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2978241 % Start longitude,-123.0601143 % Start altitude,-20.090000152587891 % Start GPS horizontal error(Meter),4.3000001907348633 % Start GPS vertical error(Meter),4.6399998664855957 % Start GPS number of satellites,5 % End latitude,49.2979288 % End longitude,-123.0600569 % End altitude,-11.979999542236328 % End GPS horizontal error(Meter),6.190000057220459 % End GPS vertical error(Meter),7.0900001525878906 % End GPS number of satellites,5 % Cast duration (Seconds),62 % 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 7.467 2.77337 4.27111 26.46 1469.83 1020.641 0.45 0.45 7.468 2.77316 4.27067 26.45 1469.84 1020.640 0.75 0.75 7.468 2.77253 4.26960 26.45 1469.84 1020.636 1.05 1.05 7.470 2.77306 4.27021 26.45 1469.85 1020.640 1.35 1.35 7.473 2.77379 4.27086 26.45 1469.88 1020.645 1.65 1.65 7.474 2.77489 4.27249 26.46 1469.90 1020.655 1.95 1.95 7.474 2.77525 4.27306 26.47 1469.91 1020.659 2.25 2.25 7.474 2.77623 4.27456 26.48 1469.92 1020.668 2.55 2.55 7.477 2.77869 4.27800 26.50 1469.97 1020.688 2.85 2.85 7.478 2.77898 4.27825 26.50 1469.98 1020.691 3.15 3.15 7.479 2.77925 4.27857 26.51 1469.99 1020.694 3.45 3.45 7.478 2.78018 4.28004 26.52 1470.01 1020.703 3.75 3.75 7.479 2.77973 4.27927 26.51 1470.01 1020.700 4.05 4.04 7.479 2.77947 4.27885 26.51 1470.01 1020.699 4.35 4.34 7.481 2.78012 4.27959 26.51 1470.03 1020.704 4.65 4.64 7.482 2.78183 4.28205 26.53 1470.06 1020.719 4.95 4.94 7.483 2.78274 4.28332 26.54 1470.08 1020.727 5.25 5.24 7.483 2.78293 4.28362 26.54 1470.09 1020.730 5.55 5.54 7.483 2.78284 4.28352 26.54 1470.09 1020.731 5.85 5.84 7.483 2.78306 4.28385 26.54 1470.10 1020.734 6.15 6.14 7.483 2.78359 4.28465 26.55 1470.11 1020.739 6.45 6.44 7.483 2.78309 4.28386 26.54 1470.11 1020.736 6.75 6.74 7.485 2.78306 4.28367 26.54 1470.12 1020.737 7.05 7.04 7.485 2.78310 4.28367 26.54 1470.12 1020.738 7.35 7.34 7.486 2.78288 4.28324 26.54 1470.13 1020.737 7.65 7.64 7.487 2.78419 4.28506 26.55 1470.15 1020.748 7.95 7.94 7.489 2.78529 4.28648 26.56 1470.18 1020.757 8.25 8.24 7.490 2.78818 4.29083 26.59 1470.22 1020.781 8.55 8.54 7.492 2.79045 4.29399 26.61 1470.26 1020.799 8.85 8.84 7.495 2.79171 4.29562 26.62 1470.29 1020.809 9.15 9.14 7.497 2.79203 4.29577 26.62 1470.31 1020.811 9.45 9.44 7.501 2.79357 4.29771 26.64 1470.34 1020.823 9.75 9.74 7.503 2.79634 4.30162 26.66 1470.39 1020.845 10.05 10.04 7.506 2.80003 4.30689 26.70 1470.45 1020.875 10.35 10.34 7.509 2.80387 4.31248 26.74 1470.52 1020.906 10.65 10.64 7.512 2.80670 4.31637 26.77 1470.57 1020.928 10.95 10.94 7.516 2.80794 4.31778 26.78 1470.60 1020.937 11.25 11.23 7.518 2.80948 4.31988 26.79 1470.63 1020.949 11.55 11.53 7.521 2.81004 4.32041 26.80 1470.65 1020.953 11.85 11.83 7.522 2.81041 4.32081 26.80 1470.66 1020.957 12.15 12.13 7.522 2.81047 4.32088 26.80 1470.67 1020.958 12.45 12.43 7.522 2.81045 4.32079 26.80 1470.67 1020.959 12.75 12.73 7.525 2.81070 4.32085 26.80 1470.69 1020.961 13.05 13.03 7.525 2.81122 4.32163 26.80 1470.70 1020.966 13.35 13.33 7.527 2.81174 4.32219 26.81 1470.72 1020.971 13.65 13.63 7.529 2.81403 4.32535 26.83 1470.76 1020.989 13.95 13.93 7.533 2.81715 4.32966 26.86 1470.82 1021.013 14.25 14.23 7.535 2.81777 4.33038 26.86 1470.84 1021.018 14.55 14.53 7.537 2.81843 4.33113 26.87 1470.85 1021.024 14.85 14.83 7.538 2.81947 4.33256 26.88 1470.88 1021.032 15.15 15.13 7.543 2.82219 4.33613 26.90 1470.93 1021.053 15.45 15.43 7.549 2.82504 4.33972 26.93 1470.99 1021.073 15.75 15.73 7.559 2.83067 4.34705 26.98 1471.10 1021.114 16.05 16.03 7.563 2.83925 4.35959 27.07 1471.23 1021.182 16.35 16.33 7.565 2.84506 4.36822 27.13 1471.31 1021.230 16.65 16.63 7.570 2.84975 4.37483 27.17 1471.39 1021.266 16.95 16.93 7.576 2.85707 4.38520 27.24 1471.51 1021.323 17.25 17.23 7.588 2.86140 4.39032 27.28 1471.61 1021.352 17.55 17.52 7.597 2.86342 4.39221 27.29 1471.66 1021.363 17.85 17.82 7.603 2.86557 4.39462 27.31 1471.71 1021.377 18.15 18.12 7.608 2.86746 4.39688 27.33 1471.76 1021.391 18.45 18.42 7.610 2.86838 4.39798 27.34 1471.78 1021.398 18.75 18.72 7.611 2.86882 4.39850 27.34 1471.80 1021.402 19.05 19.02 7.613 2.86836 4.39761 27.33 1471.80 1021.398 19.35 19.32 7.613 2.86803 4.39706 27.33 1471.80 1021.397 19.65 19.62 7.613 2.86855 4.39783 27.33 1471.81 1021.402 19.95 19.92 7.612 2.86901 4.39869 27.34 1471.82 1021.408 20.25 20.22 7.613 2.86860 4.39799 27.34 1471.82 1021.405 20.55 20.52 7.613 2.86971 4.39970 27.35 1471.84 1021.416 20.85 20.82 7.615 2.86993 4.39965 27.35 1471.86 1021.417 21.15 21.12 7.615 2.87001 4.39981 27.35 1471.86 1021.419 21.45 21.42 7.616 2.86958 4.39905 27.34 1471.86 1021.416 21.90 21.86 7.617 2.87024 4.39995 27.35 1471.88 1021.423