*2019/08/26 15:30:28.52 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 01:31:14.000 END TIME : UTC 2017/02/28 01:31:27.400 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 20.19 2 Depth metres 0.15 20.14 3 Temperature 'deg C (ITS90)' 7.231 8.124 4 Conductivity S/m 2.64978 3.08047 5 Conductance:Specific S/m 4.10322 4.65155 6 Salinity PSS-78 25.29 29.15 7 Speed:Sound m/s 1467.55 1475.99 8 Density kg/m^3 1019.751 1022.762 $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 : 254 LATITUDE : 49 18.87574 N ! (deg min) LONGITUDE : 123 8.24659 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 20:09:34 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 20:09:34 -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_013114_mid % Cast time (UTC),2017-02-28 01:31:14 % Cast time (local),2017-02-28 01:31:14 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3145956 % Start longitude,-123.1374431 % Start altitude,-15.010000228881836 % Start GPS horizontal error(Meter),1.3400000333786011 % Start GPS vertical error(Meter),2.1700000762939453 % Start GPS number of satellites,9 % End latitude,49.3144562 % End longitude,-123.1365916 % End altitude,0.88999998569488525 % End GPS horizontal error(Meter),10.390000343322754 % End GPS vertical error(Meter),19.469999313354492 % End GPS number of satellites,6 % Cast duration (Seconds),95.2 % 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 7.231 2.65276 4.11516 25.36 1467.55 1019.813 0.45 0.45 7.251 2.65167 4.11098 25.34 1467.60 1019.792 0.75 0.75 7.289 2.64978 4.10322 25.29 1467.70 1019.751 1.05 1.05 7.340 2.65808 4.10957 25.34 1467.96 1019.785 1.35 1.35 7.366 2.68402 4.14641 25.59 1468.38 1019.982 1.65 1.65 7.360 2.69225 4.15990 25.68 1468.48 1020.056 1.95 1.95 7.339 2.68839 4.15652 25.66 1468.37 1020.039 2.25 2.25 7.332 2.69096 4.16142 25.69 1468.39 1020.067 2.55 2.55 7.360 2.69630 4.16607 25.73 1468.55 1020.092 2.85 2.85 7.441 2.74959 4.23778 26.22 1469.49 1020.475 3.15 3.15 7.501 2.75961 4.24539 26.28 1469.80 1020.516 3.45 3.45 7.528 2.77717 4.26886 26.45 1470.12 1020.642 3.75 3.75 7.563 2.79263 4.28806 26.58 1470.42 1020.746 4.05 4.05 7.602 2.80157 4.29664 26.65 1470.66 1020.792 4.35 4.35 7.655 2.82044 4.31859 26.80 1471.07 1020.910 4.65 4.65 7.716 2.88036 4.40211 27.38 1472.03 1021.358 4.95 4.95 7.799 2.90214 4.42410 27.55 1472.56 1021.476 5.25 5.25 7.861 2.90818 4.42503 27.56 1472.82 1021.481 5.55 5.54 7.920 2.92154 4.43730 27.65 1473.17 1021.547 5.85 5.84 7.966 2.94783 4.47107 27.89 1473.64 1021.729 6.15 6.14 7.981 2.96680 4.49779 28.08 1473.93 1021.874 6.45 6.44 7.997 2.96951 4.49969 28.09 1474.02 1021.885 6.75 6.74 8.008 2.97639 4.50865 28.16 1474.14 1021.934 7.05 7.04 8.016 2.98275 4.51713 28.21 1474.25 1021.981 7.35 7.34 8.025 2.98326 4.51668 28.21 1474.29 1021.980 7.65 7.64 8.038 2.99049 4.52581 28.28 1474.43 1022.030 7.95 7.94 8.048 3.00149 4.54111 28.38 1474.60 1022.114 8.25 8.24 8.051 3.00446 4.54518 28.41 1474.65 1022.137 8.55 8.54 8.060 3.01918 4.56625 28.56 1474.87 1022.252 8.85 8.84 8.084 3.02212 4.56729 28.57 1474.98 1022.258 9.15 9.13 8.106 3.03194 4.57909 28.65 1475.18 1022.323 9.45 9.43 8.120 3.04091 4.59074 28.74 1475.34 1022.387 9.75 9.73 8.122 3.05080 4.60533 28.84 1475.48 1022.467 10.05 10.03 8.124 3.05155 4.60628 28.84 1475.49 1022.474 10.35 10.33 8.121 3.05176 4.60696 28.85 1475.49 1022.479 10.65 10.63 8.113 3.05172 4.60810 28.86 1475.47 1022.486 10.95 10.93 8.114 3.05195 4.60829 28.86 1475.49 1022.489 11.25 11.23 8.115 3.05318 4.60994 28.87 1475.51 1022.499 11.55 11.53 8.111 3.05770 4.61736 28.92 1475.56 1022.541 11.85 11.83 8.110 3.06019 4.62124 28.95 1475.60 1022.563 12.15 12.13 8.110 3.06097 4.62242 28.95 1475.61 1022.571 12.45 12.43 8.104 3.06268 4.62584 28.98 1475.62 1022.590 12.75 12.72 8.097 3.06506 4.63043 29.01 1475.64 1022.617 13.05 13.02 8.089 3.06770 4.63554 29.04 1475.65 1022.646 13.35 13.32 8.088 3.06655 4.63387 29.03 1475.64 1022.638 13.65 13.62 8.084 3.06707 4.63528 29.04 1475.64 1022.647 13.95 13.92 8.084 3.06728 4.63564 29.04 1475.65 1022.651 14.25 14.22 8.078 3.06692 4.63587 29.04 1475.63 1022.653 14.55 14.52 8.079 3.06731 4.63628 29.04 1475.64 1022.657 14.85 14.82 8.082 3.06830 4.63744 29.05 1475.67 1022.664 15.15 15.12 8.086 3.06834 4.63694 29.05 1475.68 1022.663 15.45 15.41 8.086 3.07142 4.64151 29.08 1475.73 1022.689 15.75 15.71 8.093 3.07414 4.64477 29.10 1475.79 1022.708 16.05 16.01 8.100 3.07685 4.64778 29.13 1475.85 1022.725 16.35 16.31 8.106 3.07740 4.64784 29.13 1475.88 1022.726 16.65 16.61 8.107 3.07787 4.64833 29.13 1475.89 1022.730 16.95 16.91 8.107 3.07701 4.64699 29.12 1475.89 1022.724 17.25 17.21 8.106 3.07761 4.64814 29.13 1475.89 1022.732 17.55 17.51 8.110 3.07777 4.64782 29.13 1475.91 1022.731 17.85 17.81 8.112 3.07804 4.64799 29.13 1475.93 1022.734 18.15 18.11 8.112 3.07865 4.64879 29.13 1475.94 1022.739 18.45 18.41 8.112 3.07984 4.65057 29.15 1475.96 1022.750 18.75 18.70 8.116 3.07948 4.64955 29.14 1475.97 1022.746 19.05 19.00 8.110 3.07959 4.65055 29.14 1475.96 1022.753 19.35 19.30 8.112 3.08016 4.65107 29.15 1475.98 1022.757 19.65 19.60 8.114 3.08035 4.65118 29.15 1475.99 1022.759 19.95 19.90 8.112 3.08047 4.65155 29.15 1475.99 1022.762 20.19 20.14 8.105 3.07935 4.65094 29.15 1475.96 1022.760