*2019/08/26 15:30:28.22 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 00:21:06.000 END TIME : UTC 2017/02/28 00:21:19.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 68 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.21 2 Depth metres 0.15 20.16 3 Temperature 'deg C (ITS90)' 7.428 8.158 4 Conductivity S/m 2.6935 3.07588 5 Conductance:Specific S/m 4.15306 4.64733 6 Salinity PSS-78 25.65 29.12 7 Speed:Sound m/s 1468.68 1475.89 8 Density kg/m^3 1020.012 1022.734 $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 : 249 LATITUDE : 49 18.86529 N ! (deg min) LONGITUDE : 123 8.17587 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 20:04:35 68 68 HDREDIT2 3.1.1 2017/12/13 11:33:16 ? ? CALIB 12.0 2019/08/26 15:30:28 68 68 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:04:34 -HEADER EDITS: 2017/12/13 11:33:16 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 15:30:28 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_20170228_002106 % Cast time (UTC),2017-02-28 00:21:06 % Cast time (local),2017-02-28 00:21:06 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3144215 % Start longitude,-123.1362645 % Start altitude,-20.1299991607666 % Start GPS horizontal error(Meter),2.3399999141693115 % Start GPS vertical error(Meter),3.2699999809265137 % Start GPS number of satellites,6 % End latitude,49.3142182 % End longitude,-123.1355649 % End altitude,-25.219999313354492 % End GPS horizontal error(Meter),6.9800000190734863 % End GPS vertical error(Meter),7.929999828338623 % End GPS number of satellites,6 % Cast duration (Seconds),68.4 % 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 7.428 2.69350 4.15306 25.65 1468.68 1020.012 0.45 0.45 7.479 2.69808 4.15356 25.66 1468.89 1020.014 0.75 0.75 7.587 2.71943 4.17252 25.80 1469.50 1020.115 1.05 1.05 7.671 2.76003 4.22402 26.16 1470.28 1020.389 1.35 1.35 7.709 2.79610 4.27419 26.51 1470.86 1020.658 1.65 1.65 7.726 2.81853 4.30630 26.73 1471.21 1020.831 1.95 1.95 7.732 2.87421 4.39054 27.31 1471.95 1021.284 2.25 2.25 7.755 2.91604 4.45128 27.73 1472.57 1021.612 2.55 2.55 7.800 2.91655 4.44590 27.70 1472.71 1021.583 2.85 2.85 7.824 2.91979 4.44770 27.71 1472.82 1021.594 3.15 3.15 7.830 2.93093 4.46381 27.82 1472.99 1021.681 3.45 3.44 7.843 2.91455 4.43712 27.64 1472.82 1021.539 3.75 3.74 7.856 2.91320 4.43334 27.62 1472.84 1021.519 4.05 4.04 7.858 2.91320 4.43298 27.61 1472.86 1021.519 4.35 4.34 7.862 2.91785 4.43961 27.66 1472.93 1021.556 4.65 4.64 7.878 2.93089 4.45729 27.79 1473.15 1021.652 4.95 4.94 7.899 2.94764 4.47981 27.94 1473.43 1021.774 5.25 5.24 7.932 2.95792 4.49096 28.02 1473.66 1021.834 5.55 5.54 7.955 2.95744 4.48703 28.00 1473.73 1021.814 5.85 5.84 7.965 2.95393 4.48042 27.96 1473.72 1021.779 6.15 6.14 7.966 2.95469 4.48146 27.96 1473.73 1021.786 6.45 6.44 7.963 2.95830 4.48732 28.00 1473.78 1021.819 6.75 6.74 7.963 2.96443 4.49663 28.07 1473.86 1021.871 7.05 7.04 7.967 2.96372 4.49501 28.06 1473.87 1021.863 7.35 7.34 7.984 2.96071 4.48815 28.01 1473.88 1021.827 7.65 7.63 7.999 2.96062 4.48598 28.00 1473.93 1021.816 7.95 7.93 8.008 2.96295 4.48816 28.01 1473.99 1021.829 8.25 8.23 8.023 2.96755 4.49317 28.05 1474.10 1021.857 8.55 8.53 8.039 2.97098 4.49623 28.07 1474.19 1021.874 8.85 8.83 8.055 2.97553 4.50081 28.11 1474.30 1021.900 9.15 9.13 8.081 2.98277 4.50824 28.16 1474.47 1021.941 9.45 9.43 8.101 3.00760 4.54301 28.40 1474.86 1022.129 9.75 9.73 8.122 3.01697 4.55438 28.49 1475.04 1022.191 10.05 10.03 8.144 3.02552 4.56417 28.56 1475.22 1022.245 10.35 10.33 8.158 3.04661 4.59411 28.77 1475.53 1022.408 10.65 10.63 8.155 3.05285 4.60396 28.83 1475.61 1022.463 10.95 10.93 8.152 3.05285 4.60426 28.83 1475.61 1022.466 11.25 11.22 8.151 3.05378 4.60588 28.84 1475.62 1022.476 11.55 11.52 8.149 3.05445 4.60718 28.85 1475.63 1022.484 11.85 11.82 8.145 3.05828 4.61344 28.90 1475.67 1022.520 12.15 12.12 8.142 3.06275 4.62071 28.95 1475.72 1022.560 12.45 12.42 8.140 3.06348 4.62201 28.95 1475.73 1022.569 12.75 12.72 8.139 3.06382 4.62264 28.96 1475.74 1022.573 13.05 13.02 8.137 3.06504 4.62476 28.97 1475.75 1022.586 13.35 13.32 8.132 3.06554 4.62630 28.98 1475.75 1022.596 13.65 13.62 8.125 3.06532 4.62693 28.99 1475.73 1022.601 13.95 13.92 8.119 3.06579 4.62849 29.00 1475.73 1022.611 14.25 14.22 8.112 3.06690 4.63108 29.01 1475.73 1022.626 14.55 14.52 8.108 3.06933 4.63529 29.04 1475.75 1022.651 14.85 14.81 8.107 3.07021 4.63687 29.05 1475.76 1022.661 15.15 15.11 8.105 3.07076 4.63785 29.06 1475.77 1022.667 15.45 15.41 8.103 3.07209 4.64019 29.07 1475.79 1022.681 15.75 15.71 8.102 3.07312 4.64193 29.09 1475.80 1022.692 16.05 16.01 8.102 3.07358 4.64256 29.09 1475.81 1022.697 16.35 16.31 8.101 3.07498 4.64485 29.11 1475.83 1022.710 16.65 16.61 8.099 3.07456 4.64449 29.10 1475.83 1022.710 16.95 16.91 8.098 3.07539 4.64587 29.11 1475.84 1022.719 17.25 17.21 8.097 3.07486 4.64520 29.11 1475.84 1022.716 17.55 17.50 8.098 3.07458 4.64459 29.10 1475.84 1022.714 17.85 17.80 8.099 3.07493 4.64512 29.11 1475.85 1022.718 18.15 18.10 8.097 3.07515 4.64563 29.11 1475.85 1022.722 18.45 18.40 8.094 3.07489 4.64567 29.11 1475.85 1022.724 18.75 18.70 8.093 3.07588 4.64733 29.12 1475.86 1022.734 19.05 19.00 8.089 3.07503 4.64657 29.11 1475.84 1022.732 19.35 19.30 8.092 3.07508 4.64624 29.11 1475.86 1022.731 19.65 19.60 8.098 3.07495 4.64517 29.11 1475.88 1022.726 19.95 19.90 8.102 3.07484 4.64455 29.10 1475.89 1022.724 20.21 20.16 8.102 3.06316 4.62679 28.98 1475.74 1022.629