*2019/08/26 15:30:33.66 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 18:42:04.000 END TIME : UTC 2017/03/03 18:42:17.200 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 20.02 2 Depth metres 0.15 20 3 Temperature 'deg C (ITS90)' 7.442 7.539 4 Conductivity S/m 2.76638 2.835 5 Conductance:Specific S/m 4.26358 4.35632 6 Salinity PSS-78 26.4 27.04 7 Speed:Sound m/s 1469.67 1471.16 8 Density kg/m^3 1020.601 1021.182 $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 : 334 LATITUDE : 49 18.44870 N ! (deg min) LONGITUDE : 123 4.91866 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 21:26:12 67 67 HDREDIT2 3.1.1 2017/12/13 11:33:19 ? ? CALIB 12.0 2019/08/26 15:30:33 67 67 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:26:12 -HEADER EDITS: 2017/12/13 11:33:19 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_184204 % Cast time (UTC),2017-03-03 18:42:04 % Cast time (local),2017-03-03 18:42:04 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3074783 % Start longitude,-123.0819776 % Start altitude,-15.130000114440918 % Start GPS horizontal error(Meter),6.7899999618530273 % Start GPS vertical error(Meter),9.2700004577636719 % Start GPS number of satellites,9 % End latitude,49.3075899 % End longitude,-123.0825704 % End altitude,-17.840000152587891 % End GPS horizontal error(Meter),17.200000762939453 % End GPS vertical error(Meter),19.069999694824219 % End GPS number of satellites,7 % Cast duration (Seconds),61.6 % 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 7.442 2.76638 4.26358 26.40 1469.67 1020.601 0.45 0.45 7.446 2.77495 4.27624 26.49 1469.80 1020.670 0.75 0.75 7.444 2.77754 4.28049 26.52 1469.83 1020.694 1.05 1.05 7.444 2.77796 4.28112 26.52 1469.84 1020.699 1.35 1.35 7.445 2.77810 4.28128 26.52 1469.85 1020.701 1.65 1.65 7.447 2.77840 4.28142 26.52 1469.86 1020.703 1.95 1.95 7.448 2.77822 4.28100 26.52 1469.87 1020.702 2.25 2.25 7.448 2.77764 4.28017 26.51 1469.86 1020.699 2.55 2.55 7.448 2.77929 4.28267 26.53 1469.89 1020.714 2.85 2.85 7.448 2.78324 4.28884 26.57 1469.95 1020.748 3.15 3.15 7.447 2.78585 4.29288 26.60 1469.98 1020.771 3.45 3.44 7.448 2.78963 4.29865 26.64 1470.04 1020.803 3.75 3.75 7.449 2.79201 4.30221 26.66 1470.08 1020.823 4.05 4.04 7.450 2.79337 4.30415 26.68 1470.10 1020.835 4.35 4.34 7.451 2.79233 4.30240 26.66 1470.10 1020.827 4.65 4.64 7.450 2.79302 4.30360 26.67 1470.11 1020.835 4.95 4.94 7.450 2.79355 4.30440 26.68 1470.12 1020.840 5.25 5.24 7.452 2.79562 4.30730 26.70 1470.16 1020.857 5.55 5.54 7.453 2.79624 4.30814 26.70 1470.17 1020.863 5.85 5.84 7.453 2.79677 4.30892 26.71 1470.19 1020.868 6.15 6.14 7.453 2.79580 4.30739 26.70 1470.18 1020.861 6.45 6.44 7.454 2.79630 4.30812 26.70 1470.19 1020.867 6.75 6.74 7.455 2.79689 4.30893 26.71 1470.21 1020.872 7.05 7.04 7.455 2.79660 4.30844 26.71 1470.21 1020.871 7.35 7.34 7.455 2.79762 4.31002 26.72 1470.23 1020.881 7.65 7.64 7.456 2.79840 4.31104 26.72 1470.25 1020.887 7.95 7.94 7.457 2.79894 4.31173 26.73 1470.26 1020.892 8.25 8.24 7.457 2.79979 4.31307 26.74 1470.28 1020.901 8.55 8.54 7.457 2.80106 4.31501 26.75 1470.30 1020.913 8.85 8.84 7.459 2.80195 4.31611 26.76 1470.32 1020.920 9.15 9.14 7.461 2.80215 4.31620 26.76 1470.33 1020.922 9.45 9.44 7.464 2.80270 4.31667 26.76 1470.35 1020.925 9.75 9.74 7.468 2.80309 4.31674 26.76 1470.37 1020.927 10.05 10.04 7.470 2.80288 4.31608 26.76 1470.38 1020.925 10.35 10.34 7.475 2.80309 4.31578 26.76 1470.40 1020.924 10.65 10.63 7.476 2.80608 4.32024 26.79 1470.45 1020.949 10.95 10.93 7.476 2.80828 4.32366 26.81 1470.48 1020.969 11.25 11.23 7.477 2.80733 4.32200 26.80 1470.48 1020.961 11.55 11.53 7.482 2.81137 4.32752 26.84 1470.55 1020.992 11.85 11.83 7.487 2.81469 4.33199 26.87 1470.62 1021.017 12.15 12.13 7.488 2.81532 4.33281 26.88 1470.63 1021.023 12.45 12.43 7.490 2.81574 4.33322 26.88 1470.65 1021.026 12.75 12.73 7.491 2.81525 4.33235 26.87 1470.65 1021.023 13.05 13.03 7.493 2.81441 4.33081 26.86 1470.65 1021.016 13.35 13.33 7.494 2.81535 4.33208 26.87 1470.67 1021.024 13.65 13.63 7.497 2.81666 4.33376 26.88 1470.70 1021.034 13.95 13.93 7.500 2.81878 4.33663 26.90 1470.74 1021.051 14.25 14.23 7.500 2.81916 4.33719 26.91 1470.75 1021.055 14.55 14.53 7.501 2.81994 4.33826 26.91 1470.77 1021.062 14.85 14.83 7.502 2.82182 4.34093 26.93 1470.80 1021.078 15.15 15.13 7.504 2.82260 4.34191 26.94 1470.82 1021.085 15.45 15.43 7.508 2.82260 4.34139 26.93 1470.84 1021.083 15.75 15.73 7.509 2.82253 4.34109 26.93 1470.85 1021.083 16.05 16.03 7.511 2.82254 4.34090 26.93 1470.86 1021.083 16.35 16.32 7.513 2.82320 4.34159 26.94 1470.88 1021.088 16.65 16.62 7.515 2.82392 4.34251 26.94 1470.89 1021.094 16.95 16.92 7.516 2.82603 4.34555 26.96 1470.93 1021.112 17.25 17.22 7.516 2.82455 4.34331 26.95 1470.92 1021.101 17.55 17.52 7.515 2.82564 4.34511 26.96 1470.93 1021.112 17.85 17.82 7.518 2.82746 4.34748 26.98 1470.97 1021.126 18.15 18.12 7.529 2.82773 4.34654 26.97 1471.01 1021.122 18.45 18.42 7.531 2.82738 4.34571 26.97 1471.01 1021.119 18.75 18.72 7.530 2.82652 4.34445 26.96 1471.01 1021.113 19.05 19.02 7.527 2.82911 4.34890 26.99 1471.04 1021.138 19.35 19.32 7.530 2.83128 4.35174 27.01 1471.08 1021.155 19.65 19.62 7.533 2.83319 4.35439 27.03 1471.12 1021.170 20.02 20.00 7.539 2.83500 4.35632 27.04 1471.16 1021.182