*2026/03/24 12:05:56.00 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2019/07/18 17:14:41.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 54 DATA DESCRIPTION : CTD FILE TYPE : ASCII CRC : 6CFD2452 NUMBER OF CHANNELS : 12 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- --------------------------- --------------- -------------- -------------- 1 Pressure decibar 1.364 53.737 2 Depth metres 1.351 53.19 3 Temperature:Primary 'deg C (ITS90)' 3.1963 10.3565 4 Transmissivity %/metre 3.1 54.2 5 Fluorescence:URU:Seapoint mg/m^3 0.478 2.516 6 PAR uE/m^2/sec 0 260.807 7 PAR:Reference uE/m^2/sec 196.429 204.39 8 Salinity:T0:C0 PSS-78 32.0848 32.7269 9 Oxygen:Dissolved:SBE mL/L 6.687 8.873 10 Oxygen:Dissolved:SBE umol/kg 291.466 386.3196 11 Conductivity:Primary S/m 2.998078 3.554202 12 Number_of_bin_records n/a 1 68 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 7 F ' ' 1 2 -99 ' ' 7 F ' ' 1 3 -99 ' ' 9 F ' ' 4 4 -99 ' ' 6 F ' ' 1 5 -99 ' ' 8 F ' ' 3 6 -99 ' ' 7 F ' ' 1 7 -99 ' ' 7 F ' ' 1 8 -99 ' ' 9 F ' ' 4 9 -99 ' ' 7 F ' ' 2 10 -99 ' ' 6 F ' ' 1 11 -99 ' ' 10 F ' ' 5 12 ' ' ' ' 5 I I 0 $END $REMARKS This file converted from Sea-Bird file: D:\Telework\2019-078\Processing\derive\2019-078-0199.cnv $END *ADMINISTRATION MISSION : 2019-078 AGENCY : IOS, Ocean Sciences Division, Sidney, B.C. COUNTRY : Canada PROJECT : Canada's Three Oceans/Distributed Biological Obs. SCIENTIST : Nelson J. PLATFORM : Sir Wilfrid Laurier *LOCATION GEOGRAPHIC AREA : North Pacific/ Bering Sea / Chukchi Sea STATION : SEC-3/DBO 3.6 EVENT NUMBER : 199 LATITUDE : 67 53.77000 N ! (deg min) LONGITUDE : 168 13.99000 W ! (deg min) WATER DEPTH : 59 ALTIMETER (M) : 3.93 ! custom item $REMARKS Altimeter value is distance from bottom and is calculated as the median of the deepest 2 metres of data. $END *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0941 $TABLE: SENSORS ! Name Abs Depth Serial No ! ----------------------------------- -------------- ---------- Temperature ' ' 5048 Conductivity ' ' 3579 'Pressure:Digiquartz with TC' ' ' 131733 Temperature:2 ' ' 5073 Conductivity:2 ' ' 3581 Fluorometer:Seapoint ' ' 3575 'Transmissometer:WET Labs C-Star' ' ' 1666 'Oxygen:SBE 43' ' ' 1117 Altimeter ' ' 40853 PAR/Irradiance:Biospherical/Licor ' ' 70123 'User Polynomial' ' ' 370 'User Polynomial:2' ' ' 016 Unavailable ' ' ' ' SPAR:Biospherical/Licor ' ' 20281 $END $REMARKS Software Version Seasave V 7.26.7.107 $END *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SBE_IOS 4.3 2023/06/23 13:51:20 31517 31517 CLEAN 5.3 2023/06/23 14:32:17 31517 31517 CLIP 1.4.1 2023/06/26 09:20:52 31517 24018 SHIFTDAT 3.5 2023/06/27 08:20:47 24018 24018 SHIFTDAT 3.5 2023/06/27 13:46:11 24018 24018 SHIFTDAT 3.5 2023/06/27 13:50:11 24018 24018 DELETE 6.3 2023/06/27 13:54:35 24018 1852 CTDEDIT 5.4.0 2023/06/30 15:28:36 1852 1653 BINAVE 4.2.1 2026/03/18 11:50:00 1653 54 REMOVECH 8.2 2026/03/19 10:55:42 54 54 CHGUNITS 3.2 2026/03/19 10:57:33 54 54 REORDER 1.3.1 2026/03/19 10:58:36 ? ? HDREDIT2 3.2 2026/03/24 12:05:56 ? ? $END $REMARKS -CLEAN functions: 2023/06/23 14:27:36 20 Reset #RECS, MIN & MAX values in header. Interpolation by Record Number, in Pressure Set event to last 4 characters of file name -The following CLIP parameters were used. Clip by Record Number Limits First, Last Records = 7500, end from event list: clip.csv Time Not Available in File -The following SHIFT parameters were used. Shift Channel: Fluorescence:URU:Seapoint # of Records to Advance (-ve for Delay): At REC# 0 Shift= 24.00 -The following SHIFT parameters were used. Shift Channel: Conductivity:Primary # of Records to Advance (-ve for Delay): At REC# 0 Shift= -0.30 Salinity was recalculated after shift -The following SHIFT parameters were used. Shift Channel: Conductivity:Secondary # of Records to Advance (-ve for Delay): At REC# 0 Shift= -0.70 Salinity was recalculated after shift -The following DELETE parameters were used: Surface Record Removal: Last Press Min Maximum Surface Pressure (relative): 10.00 Surface Swell Pressure Tolerance: 1.00 Pressure filtered over width: 9 Swells deleted. Warning message if pressure difference of 2.00 Drop rates < 0.30m/s (calculated over 11 points) will be deleted. Drop rate applies in the range 10.00 to 44.19 dbars Sample interval (from FILE section of header) = 0.042 seconds. -CTDEDIT v5.4.0 2023/06/30 15:28:36 199 records were deleted in this editing session. 8 changes in channel Salinity:T0:C0 -The following BINAVE parameters were used: Bin channel = Pressure Averaging interval = 1.00 Minimum bin value = 0.000 Average value was used Interpolated values were NOT used for empty bins Channel 'NUMBER_OF_BIN_RECORDS' was added to file. -REMOVECH 2026/03/19 10:55:42 The following CHANNEL(S) were removed: Scan_Number Temperature:Secondary [deg C (ITS90)] Conductivity:Secondary [S/m] Oxygen:Voltage:SBE [volts] Descent_Rate [m/s] Status:Pump Altimeter [metres] Salinity:T1:C1 [PSS-78] Flag -CHANGE units: Temperature reference channel: Temperature:Primary [deg C (ITS90)] Salinity reference channel: Salinity:T0:C0 [PSS-78] 'Oxygen:Dissolved:SBE' changed from mL/L to umol/kg -HEADER EDITS: 2026/03/24 12:05:56 Applied edit header: E:\Telework\2019-078\Processing\doc\2019-078-HDR.TXT Channel 2: Depth [metres] Name: Depth:Salt_Water ==> Depth Channel 11: Conductivity:Primary [S/m] Format: F11.6 ==> F10.5 Channel 4: Transmissivity [%/metre] Name: Transmissivity:1 ==> Transmissivity Format: F8.3 ==> F6.1 Channel 6: PAR [uE/m^2/sec] Format: F11.3 ==> F7.1 Channel 7: PAR:Reference [uE/m^2/sec] Format: F11.3 ==> F7.1 Channel 9: Oxygen:Dissolved:SBE [mL/L] Format: F8.3 ==> F7.2 $END *COMMENTS SBE HEADER Sea-Bird SBE 9 Data File: FileName = C:\2019-78\Raw\2019-78-0199.hex Software Version Seasave V 7.26.7.107 Temperature SN = 5048 Conductivity SN = 3579 Number of Bytes Per Scan = 44 Number of Voltage Words = 5 Number of Scans Averaged by the Deck Unit = 1 System UpLoad Time = Jul 18 2019 10:14:41 NMEA Latitude = 67 53.77 N NMEA Longitude = 168 13.99 W NMEA UTC (Time) = Jul 18 2019 17:13:01 Store Lat/Lon Data = Append to Every Scan SBE 11plus V 5.2 number of scans to average = 1 pressure baud rate = 9600 NMEA baud rate = 4800 surface PAR voltage added to scan A/D offset = 3 GPIB address = 1 advance primary conductivity 0.073 seconds advance secondary conductivity 0.073 seconds autorun on power up is disabled S> Cruise: 2019-78 Canada's Three Oceans Ship: CCGS Sir Wilfrid Laurier Scientist: John Nelson Station: SEC-3/DBO 3.6 Depth (m): 59 System UTC = Jul 18 2019 17:14:41 # nquan = 19 # nvalues = 31517 # units = specified # name 0 = scan: Scan Count # name 1 = prDM: Pressure, Digiquartz [db] # name 2 = depSM: Depth [salt water, m] # name 3 = t090C: Temperature [ITS-90, deg C] # name 4 = t190C: Temperature, 2 [ITS-90, deg C] # name 5 = c0S/m: Conductivity [S/m] # name 6 = c1S/m: Conductivity, 2 [S/m] # name 7 = CStarTr0: Beam Transmission, WET Labs C-Star [%] # name 8 = flSP: Fluorescence, Seapoint # name 9 = sbeox0V: Oxygen raw, SBE 43 [V] # name 10 = par: PAR/Irradiance, Biospherical/Licor # name 11 = spar: SPAR, Biospherical/Licor # name 12 = dz/dtM: Descent Rate [m/s] # name 13 = pumps: Pump Status # name 14 = altM: Altimeter [m] # name 15 = sal00: Salinity, Practical [PSU] # name 16 = sal11: Salinity, Practical, 2 [PSU] # name 17 = sbeox0ML/L: Oxygen, SBE 43 [ml/l], WS = 2 # name 18 = flag: flag # span 0 = 1, 31517 # span 1 = -0.099, 54.193 # span 2 = -0.098, 53.645 # span 3 = 3.1917, 10.9388 # span 4 = 3.1921, 11.0136 # span 5 = 0.061825, 3.572428 # span 6 = 0.540876, 3.571523 # span 7 = 27.7117, 92.6823 # span 8 = 7.3260e-02, 4.0781e+00 # span 9 = 2.0818, 2.9964 # span 10 = 1.0000e-12, 3.7839e+02 # span 11 = 1.7834e+02, 2.6450e+02 # span 12 = -1.006, 1.122 # span 13 = 0, 1 # span 14 = 0.00, 100.00 # span 15 = 0.4183, 32.7620 # span 16 = 4.1681, 34.9186 # span 17 = 4.8240, 9.0265 # span 18 = 0.0000e+00, 0.0000e+00 # interval = seconds: 0.0416667 # start_time = Jul 18 2019 17:14:41 [System UTC, header] # bad_flag = -9.990e-29 # # # # # 5048 # 07-Dec-18 # 1 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.000 # 4.33976307e-003 # 6.38570231e-004 # 2.16731913e-005 # 1.96844011e-006 # 1000.000 # 1.00000000 # 0.0000 # # # # # # 3579 # 12-Dec-18 # 1 # # 0.0000 # 2000.0000 # 0 # # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.0 # -9.57000000e-008 # # # -9.41538124e+000 # 1.16860475e+000 # -1.78551238e-003 # 1.76539891e-004 # -9.57000000e-008 # 3.2500e-006 # # 0.00000000e+000 # # 1.00000000 # 0.00000 # # # # # # 131733 # 06-Apr-2015 # -4.347790e+004 # -5.184406e-001 # 1.193610e-002 # 3.554700e-002 # 0.000000e+000 # 3.025762e+001 # -5.058120e-004 # 3.918840e-006 # 2.607810e-009 # 1.00000000 # -0.40000 # 0.000000e+000 # 1.280000e-002 # -9.105200e+000 # # # # # # 5073 # 08-Dec-18 # 1 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.000 # 4.38644950e-003 # 6.43752140e-004 # 2.31989596e-005 # 2.24901715e-006 # 1000.000 # 1.00000000 # 0.0000 # # # # # # 3581 # 13-Dec-18 # 1 # # 0.0000 # 2000.0000 # 0 # # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.0 # -9.57000000e-008 # # # -9.28906700e+000 # 1.14476526e+000 # -2.02752207e-003 # 1.92674481e-004 # -9.57000000e-008 # 3.2500e-006 # # 0.00000000e+000 # # 1.00000000 # 0.00000 # # # # # # 3575 # tested 15-Feb-18 # # 2 # 0.000 # # # # # # 1666 # 04-June-2019 # 19.0720 # -0.0230 # 0.250 # # # # # # 1117 # 19-Jan-19 # 1 # # # 0.0000 # 0.0000e+000 # 0.0000 # 0.00e+000 # 0.0000 # 0.0 # # # # 5.0177e-001 # -0.5245 # -4.2051e-003 # 1.3884e-004 # -2.2874e-006 # 2.5826e+000 # 1.92634e-004 # -4.64803e-002 # 3.6000e-002 # 1.6400 #

-3.3000e-002

#

5.0000e+003

#

1.4500e+003

# # # # # # # 40853 # 12 Feb 2007 # 15.000 # 0.000 # # # # # # 70123 # 4 Apr 2016 (factory) # 1.00000000 # 0.00000000 # 11560693641.61850000 # 1.00000000 # -0.08776394 # # # # # # # # # 370 # 2019-03-25 # Rinko III ARO-CAV # 0.00000000 # 1.00000000 # 0.00000000 # 0.00000000 # # # # # # 016 # 2018 # Optode- Approx mL/L only!! Rough calc # 0.00000000 # 3.85000000 # 0.00000000 # 0.00000000 # # # # # # # # # 20281 # 04-Apr-2016 # 1.6411e+003 # 1.00000000 # # # # datcnv_date = Jun 16 2023 15:42:42, 7.26.7.129 [datcnv_vars = 15] # datcnv_in = D:\Telework\2019-078\Unprocessed\CTD\2019-078-0199.hex D:\Telework \2019-078\Processing\doc\2019-078-ctd.xmlcon # datcnv_skipover = 0 # datcnv_ox_hysteresis_correction = yes # wildedit_date = Jun 19 2023 15:38:35, 7.26.7.129 # wildedit_in = D:\Telework\2019-078\Processing\convert\2019-078-0199.cnv # wildedit_pass1_nstd = 2.0 # wildedit_pass2_nstd = 5.0 # wildedit_pass2_mindelta = 0.000e+000 # wildedit_npoint = 50 # wildedit_vars = prDM depSM t090C t190C c0S/m c1S/m # wildedit_excl_bad_scans = yes # alignctd_date = Jun 20 2023 13:30:20, 7.26.7.129 # alignctd_in = D:\Telework\2019-078\Processing\wildedit\2019-078-0199.cnv # alignctd_adv = sbeox0V 3.000 # celltm_date = Jun 20 2023 13:32:05, 7.26.7.129 # celltm_in = D:\Telework\2019-078\Processing\align\2019-078-0199.cnv # celltm_alpha = 0.0245, 0.0245 # celltm_tau = 9.5000, 9.5000 # celltm_temp_sensor_use_for_cond = primary, secondary # Derive_date = Jun 20 2023 13:33:50, 7.26.7.129 [derive_vars = 3] # Derive_in = D:\Telework\2019-078\Processing\celltm\2019-078-0199.cnv D:\Telewo rk\2019-078\Processing\doc\2019-078-ctd.xmlcon # derive_time_window_docdt = seconds: 2 # derive_ox_tau_correction = yes # file_type = ascii END* Remarks from CTDEDIT: CTDEDIT was used to remove records corrupted by shed wakes; salinity was cleaned. --------------------------------------------------------------------------------------- Data Processing Notes: ---------------------- Channels Transmissivity, Fluorescence:URU:SeaPoint, PAR and Reference PAR are nominal and unedited except that some records were removed in editing temperature and salinity. The post-cruise calibrations indicate significant drift in the primary conductivity since the previous calibration. However, there is good evidence that no significant drift occurred during this cruise. Similarly, the post-cruise calibration of the dissolved oxygen sensor indicated significant damage that was not seen during this cruise. The standard deviations in both salinity channels were higher than usual in the Pacific Ocean section of the cruise, but this was due to 2-sided noise that mostly disappears in bin-averaging. The 2 channels were in good agreement with each other and with bottle samples. Primary channels were selected for most casts as there was slightly less noise. However, the secondary channels were selected for event #50 due to a large section of bad data in the primary channels. Channel Oxygen:Dissolved:SBE was recalibrated based on bottle samples taken in the Pacific Ocean section of the cruise. CTD data were examined using a graphical editor. There are many unstable features in the T-S plots. Where these appeared to be due to corruption by shed wakes or ship effects the records were removed. Small unstable features that did not appear to be due to such effects or instrumental error were left unedited. The fluorescence data compare in the usual way with extracted chlorophyll samples with values higher than CHL when CHL<1ug/L, and falling to about 50% of CHL for higher CHL values. For further processing details see the processing report 2019-078_Processing_Report.doc. --------------------------------------------------------------------------------------- !--1--- --2--- ---3---- --4-- ---5--- --6--- --7--- ---8---- --9--- --10- ----11--- -12- !Pressu Depth Temperat Trans Fluores PAR PAR: Salinity Oxygen Oxyge Conductiv Numb !re ure: missi cence: Refere :T0:C0 : n: ity: er_o ! Primary vity URU: nce Dissol Disso Primary ~bin ! Seapoin ved: lved: _rec ! t SBE SBE ords !------ ------ -------- ----- ------- ------ ------ -------- ------ ----- --------- ---- *END OF HEADER 1.4 1.4 10.2679 49.9 0.510 260.8 204.4 32.0948 6.78 295.6 3.54722 18 1.9 1.9 10.2807 50.0 0.494 111.5 203.2 32.0931 6.76 294.6 3.54820 68 3.0 2.9 10.3565 50.3 0.494 66.5 202.3 32.0859 6.69 291.5 3.55420 31 4.0 4.0 10.3464 50.1 0.620 55.3 202.4 32.0848 6.71 292.4 3.55324 22 5.0 5.0 10.1378 49.7 0.610 46.9 201.9 32.0958 6.92 301.5 3.53603 28 6.0 5.9 9.7807 51.2 0.543 39.7 201.8 32.1670 7.12 310.5 3.51186 32 7.0 6.9 9.8509 53.1 0.514 34.9 201.5 32.1522 7.03 306.6 3.51647 26 8.0 7.9 9.9804 53.4 0.488 31.6 198.9 32.1538 7.01 305.6 3.52806 26 9.0 8.9 9.8004 54.2 0.478 27.5 200.5 32.1540 7.07 308.2 3.51231 27 9.9 9.8 9.7484 54.1 0.492 24.1 200.4 32.1577 6.93 301.8 3.50814 20 11.1 11.0 9.1390 52.0 0.502 20.9 200.4 32.1706 6.82 297.3 3.45610 25 12.0 11.9 7.9875 51.8 0.508 18.8 200.4 32.1553 7.49 326.3 3.35468 27 12.8 12.6 6.4881 53.0 0.511 17.2 200.4 32.1460 8.03 349.7 3.22436 15 14.5 14.3 4.7791 52.7 0.525 14.0 200.4 32.2695 8.38 365.1 3.09111 1 15.0 14.8 4.7512 52.0 0.525 13.1 200.4 32.2773 8.32 362.4 3.08945 35 16.0 15.9 4.6415 50.7 0.572 11.5 200.4 32.2681 8.20 357.1 3.07948 34 17.0 16.8 4.3107 49.4 0.700 10.1 200.4 32.2856 8.08 351.9 3.05323 34 18.0 17.8 4.1515 45.0 0.850 8.8 200.4 32.3009 8.13 354.1 3.04123 36 19.0 18.8 4.2078 43.4 1.046 7.6 200.4 32.3219 8.27 360.1 3.04779 37 20.0 19.8 4.1741 45.2 1.263 6.5 200.2 32.3259 8.27 359.9 3.04535 32 21.0 20.8 4.0871 44.6 1.458 5.5 200.4 32.3266 8.32 362.4 3.03815 33 22.0 21.8 4.0888 48.3 1.083 4.7 200.4 32.3628 8.29 361.1 3.04142 34 23.0 22.8 3.9514 46.2 1.197 4.0 200.4 32.3691 8.32 362.3 3.03048 34 24.0 23.8 4.2302 43.8 1.420 3.5 200.4 32.4332 8.69 378.3 3.05939 32 25.0 24.7 4.3651 51.1 1.148 3.0 200.4 32.4885 8.87 386.3 3.07552 32 26.0 25.7 4.1184 50.1 0.978 2.6 200.4 32.5056 8.82 384.1 3.05622 34 27.0 26.7 3.9379 46.0 1.079 2.3 200.2 32.5130 8.32 362.1 3.04170 34 28.0 27.7 3.7789 39.8 1.383 2.0 200.4 32.5126 7.83 340.8 3.02834 33 29.0 28.7 3.7337 34.2 1.497 1.8 200.4 32.5196 7.87 342.8 3.02519 33 30.0 29.7 3.8309 35.7 1.869 1.5 200.4 32.5472 8.06 350.7 3.03572 31 31.0 30.7 3.7222 32.8 2.516 1.3 200.1 32.5543 7.98 347.5 3.02723 33 32.0 31.7 3.7055 33.2 2.399 1.0 200.3 32.5690 7.99 347.7 3.02710 33 33.0 32.7 3.6604 37.2 2.216 0.8 200.3 32.5771 8.04 349.9 3.02404 32 34.0 33.7 3.6412 38.7 2.319 0.6 200.1 32.5883 8.00 348.3 3.02340 31 35.0 34.6 3.5796 36.2 2.130 0.5 199.3 32.5928 7.82 340.2 3.01865 32 36.0 35.6 3.5504 33.0 1.990 0.4 199.2 32.6046 7.65 333.1 3.01723 33 37.0 36.6 3.5161 31.6 1.665 0.4 198.6 32.6147 7.54 328.4 3.01525 30 38.0 37.6 3.4818 29.1 1.465 0.3 198.6 32.6263 7.45 324.5 3.01337 31 39.0 38.6 3.4578 25.9 1.359 0.2 198.4 32.6340 7.48 325.6 3.01205 33 40.0 39.6 3.4553 25.2 1.336 0.2 198.4 32.6421 7.73 336.5 3.01256 33 41.0 40.6 3.4350 31.8 1.566 0.1 198.4 32.6521 7.85 341.8 3.01173 32 42.0 41.6 3.4019 32.5 1.430 0.1 198.4 32.6597 7.70 335.2 3.00962 32 43.0 42.6 3.3541 28.1 1.118 0.1 198.4 32.6745 7.41 322.4 3.00689 33 44.0 43.6 3.3286 15.9 0.995 0.0 198.4 32.6866 7.33 318.8 3.00580 33 45.0 44.5 3.2865 12.9 1.034 0.0 198.4 32.6905 7.32 318.7 3.00263 32 46.0 45.5 3.2797 9.1 1.190 0.0 198.4 32.6896 7.28 316.9 3.00204 32 47.0 46.5 3.2659 5.6 1.213 0.0 196.4 32.6960 7.25 315.4 3.00145 33 48.0 47.5 3.2596 4.1 1.132 0.0 198.4 32.7004 7.22 314.1 3.00133 33 49.0 48.5 3.2586 3.9 1.068 0.0 198.4 32.7038 7.19 312.9 3.00157 32 50.0 49.5 3.2257 5.4 1.046 0.0 198.4 32.7099 7.15 311.3 2.99939 30 51.0 50.5 3.2029 6.6 1.047 0.0 198.4 32.7197 7.04 306.6 2.99830 33 52.0 51.5 3.1963 5.1 0.968 0.0 198.4 32.7231 7.04 306.6 2.99808 34 52.7 52.2 3.1968 4.5 0.962 0.0 198.4 32.7247 7.17 312.0 2.99828 20 53.7 53.2 3.2082 3.1 1.007 0.0 198.4 32.7269 7.08 308.4 2.99946 17