*2010/09/02 14:11:54.56 *IOS HEADER VERSION 1.8 2007/05/25 2007/05/25 *FILE START TIME : UTC 2009/04/12 17:06:34.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 90 DATA DESCRIPTION : CTD FILE TYPE : ASCII CRC : B52EE3F4 NUMBER OF CHANNELS : 10 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- --------------------------- --------------- -------------- -------------- 1 Pressure decibar 2.2 90.8 2 Temperature:Secondary 'deg C (ITS90)' 7.3556 7.6972 3 Transmissivity %/metre 15.129 44.649 4 Fluorescence:URU:Seapoint mg/m^3 0.678 2.035 5 PAR uE/m^2/sec 0 75.6 6 PAR:Reference uE/m^2/sec 131.3 142.9 7 Oxygen:Dissolved:SBE mL/L 4.1 5.78 8 Oxygen:Dissolved:SBE umol/kg 178.4 251.8 9 Salinity:T1:C1 PSS-78 31.6277 32.6388 10 Number_of_bin_records n/a 17 63 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 7 F ' ' 1 2 -99 ' ' 9 F ' ' 4 3 -99 ' ' 6 F ' ' 1 4 -99 ' ' 8 F ' ' 3 5 -99 ' ' 7 F ' ' 1 6 -99 ' ' 7 F ' ' 1 7 -99 ' ' 7 F ' ' 2 8 -99 ' ' 6 F ' ' 1 9 -99 ' ' 9 F ' ' 4 10 ' ' ' ' 5 I I 0 $END $REMARKS This file converted from Sea-Bird file: Q:\Cruise_Data_Processing\2009-26\Pro $END *ADMINISTRATION MISSION : 2009-26 AGENCY : IOS, Ocean Science and Productivity, Sidney, B.C. COUNTRY : Canada PROJECT : Strait of Georgia / Juan de Fuca SCIENTIST : Chandler P. PLATFORM : Vector *LOCATION GEOGRAPHIC AREA : Strait of Georgia / Juan de Fuca Strait STATION : 76 EVENT NUMBER : 18 LATITUDE : 48 31.29000 N ! (deg min) LONGITUDE : 124 29.97000 W ! (deg min) WATER DEPTH : 91 ALTIMETER (M) : 4.59 ! 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 : 0550 $TABLE: SENSORS ! Name Abs Depth Serial No ! ------------------------- -------------- ---------- temperature:primary ' ' 4883 conductivity:primary ' ' 1763 pressure ' ' 75636 temperature:secondary ' ' 2095 conductivity:secondary ' ' 2754 Fluorometer ' ' Seapoint transmissometer:primary ' ' 1005dr Oxygen:SBE ' ' 1119 altimeter: ' ' ' ' irradiance:primary ' ' 4565 surface ' ' 'degrees = 0.0' $END $REMARKS SOFTWARE VERSION SEASAVE V 7.16 $END *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SBE_IOS 3.1 2009/06/23 11:23:33 5666 5666 CLEAN 5.0.2 2009/06/23 11:46:44 5630 5630 ADTIMCH 4.3 2009/06/23 14:45:06 5630 5630 SHIFTDAT 3.4 2009/06/24 12:09:50 5630 5630 SHIFTDAT 3.4 2009/06/24 12:26:20 5630 5630 SHIFTDAT 3.4 2009/06/24 12:41:05 5630 5630 SHIFTDAT 3.4 2009/06/24 12:55:24 5630 5630 DELETE 6.3 2009/06/24 13:08:36 5630 2483 CTDEDIT 4.61 2009/06/28 16:29:42 2483 2438 CALIB 11.7 2009/06/30 11:06:45 2438 2438 FILTERS 4.3 2009/06/30 14:36:22 2438 2438 BINAVE 4.1.1 2009/06/30 15:57:36 2438 90 REMOVECH 8.0 2009/06/30 16:33:39 90 90 CHGUNITS 3.0 2009/06/30 16:33:58 90 90 REORDER 1.2.1 2009/06/30 16:35:46 ? ? HDREDIT2 2.5.1 2009/06/30 16:43:51 ? ? CALIB 11.7 2010/08/18 15:31:19 90 90 HDREDIT2 2.5.1 2010/08/18 15:34:00 ? ? HDREDIT2 2.5.1 2010/09/02 14:11:54 ? ? $END $REMARKS -CLEAN functions: 2009/06/23 11:42:10 20 Interpolation by Channel 1: Scan_Number [n/a] in Pressure Set event to last 4 characters of file name -The following ADTIMCH parameters were used. Add 24.00 hours to times in header file section -The following SHIFT parameters were used. Shift Channel: Fluorescence:Seapoint # of Records to Advance (-ve for Delay): At REC# 0 Shift= 24.00 -The following SHIFT parameters were used. Shift Channel: Oxygen:Dissolved:SBE # of Records to Advance (-ve for Delay): At REC# 0 Shift= 65.00 -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= -0.30 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: 15 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 81.29 dbars Sample interval (from FILE section of header) = 0.042 seconds. -CTDEDIT 2009/06/28 16:29:42 45 records were deleted in this editing session. No data values were changed. -CALIB parameters: 2009/06/30 11:06:45 Calibration type = Correct Mode: ONLY - calibration specs from Cal File only. Calibration file = Q:\Cruise_Data_Processing\2009-26\Processing\doc\2009-26-recal1.ccf Calibrations applied: Ch Name Units Fmla Coefficents -- ----------------------------- --------- --- ----------------------------- 15 Oxygen:Dissolved:SBE mL/L 10 0.8800000E-02 0.1038800E+01 -The following FILTER parameters were used. Median filter was used. Filter width = 11 The following channel(s) were filtered. Fluorescence:Seapoint -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 2009/06/30 16:33:39 10 channels removed. -CHANGE units: 'Oxygen:Dissolved:SBE' changed from mL/L to umol/kg -HEADER EDITS: 2009/06/30 16:43:51 Applied edit header: Q:\Cruise_Data_Processing\2009-26\Processing\doc\2009-26-HDR.TXT Channel 1: Pressure [decibar] Units: dbars ==> decibar Format: F10.3 ==> F7.1 Channel 4: Fluorescence:URU:Seapoint [mg/m^3] Name: Fluorescence:Seapoint ==> Fluorescence:URU:Seapoint Channel 5: PAR [uE/m^2/sec] Format: F11.3 ==> F7.1 Channel 6: PAR:Reference [uE/m^2/sec] Format: F11.3 ==> F7.1 Channel 7: Oxygen:Dissolved:SBE [mL/L] Format: F8.3 ==> F7.2 -CALIB parameters: 2010/08/18 15:31:19 Calibration type = Correct Mode: ONLY - calibration specs from Cal File only. Calibration file = Q:\Cruise_Data_Processing\Trans Cor\2009-26\DOC\2009-26-recal-tr.ccf Calibrations applied: Ch Name Units Fmla Coefficents -- ----------------------------- --------- --- ----------------------------- 3 Transmissivity %/metre 10 0.0000000E+00 0.1230000E+01 -HEADER EDITS: 2010/08/18 15:34:00 Applied edit header: Q:\Cruise_Data_Processing\Trans Cor\2009-26\DOC\Trans_Correction1.TXT -HEADER EDITS: 2010/09/02 14:11:54 Channel 3: Transmissivity [%/metre] Format: F7.2 ==> F6.1 $END *COMMENTS SBE HEADER Sea-Bird SBE 9 Data File: FileName = C:\Data\2009-26\2009-018.hex Software Version Seasave V 7.16 Temperature SN = 4883 Conductivity SN = 1763 Number of Bytes Per Scan = 40 Number of Voltage Words = 5 Number of Scans Averaged by the Deck Unit = 1 System UpLoad Time = Apr 12 2009 03:32:28 NMEA Latitude = 48 31.29 N NMEA Longitude = 124 29.97 W NMEA UTC (Time) = Apr 11 2009 17:06:34 Store Lat/Lon Data = Append to Every Scan Vector Cruise: 2009-26 Station: 76 Latitude: Longitude: Depth (m): 91 # nquan = 18 # nvalues = 5666 # units = specified # name 0 = scan: Scan Count # name 1 = prDM: Pressure, Digiquartz [db] # name 2 = t090C: Temperature [ITS-90, deg C] # name 3 = t190C: Temperature, 2 [ITS-90, deg C] # name 4 = c0S/m: Conductivity [S/m] # name 5 = c1S/m: Conductivity, 2 [S/m] # name 6 = xmiss: Beam Transmission, Chelsea/Seatech/Wetlab CStar [%] # name 7 = flSP: Fluorescence, Seapoint # name 8 = sbeox0V: Oxygen Voltage, SBE 43 # name 9 = par: PAR/Irradiance, Biospherical/Licor # name 10 = spar: SPAR/Surface Irradiance # name 11 = pumps: Pump Status # name 12 = dz/dtM: Descent Rate [m/s] # name 13 = altM: Altimeter [m] # name 14 = sbeox0ML/L: Oxygen, SBE 43 [ml/l], WS = 2 # name 15 = sal00: Salinity [PSU] # name 16 = sal11: Salinity, 2 [PSU] # name 17 = flag: flag # span 0 = 1, 5666 # span 1 = 0.758, 91.295 # span 2 = 7.3502, 7.7113 # span 3 = 7.3532, 7.7146 # span 4 = 3.279644, 3.349050 # span 5 = 3.279476, 3.348591 # span 6 = 56.7556, 77.6856 # span 7 = 6.3004e-01, 2.4872e+00 # span 8 = 1.9353, 2.5531 # span 9 = 1.0000e-12, 2.2172e+02 # span 10 = 1.3131e+02, 1.4502e+02 # span 11 = 0, 1 # span 12 = -1.681, 1.294 # span 13 = 3.93, 99.00 # span 14 = 3.91781, 5.56934 # span 15 = 31.6275, 32.6524 # span 16 = 31.6255, 32.6448 # span 17 = 0.0000e+00, 0.0000e+00 # interval = seconds: 0.0416667 # start_time = Apr 12 2009 03:32:28 # bad_flag = -9.990e-29 # sensor 0 = Frequency 0 temperature, primary, 4883, 22-Dec-07 # sensor 1 = Frequency 1 conductivity, primary, 1763, 11-Oct-07, cpcor = -9.57 00e-08 # sensor 2 = Frequency 2 pressure, 75636, 20-Aug-07 # sensor 3 = Frequency 3 temperature, secondary, 2095, 16-Oct-07 # sensor 4 = Frequency 4 conductivity, secondary, 2754, 25-Apr-07, cpcor = -9. 5700e-08 # sensor 5 = Extrnl Volt 0 Fluorometer, Seapoint, primary # sensor 6 = Extrnl Volt 2 transmissometer, primary, 1005dr, 5-Mar-08 # sensor 7 = Extrnl Volt 3 Oxygen, SBE, primary, 1119, 12-Feb-08 # sensor 8 = Extrnl Volt 4 altimeter # sensor 9 = Extrnl Volt 6 irradiance (PAR), primary, 4565, 29/01/2009 # sensor 10 = Extrnl Volt 9 surface irradiance (SPAR), degrees = 0.0 # datcnv_date = Jun 23 2009 08:31:55, 7.18c # datcnv_in = Q:\Cruise_Data_Processing\2009-26\RAW\CTD\2009-26-0018.hex Q:\Crui se_Data_Processing\2009-26\Processing\doc\2009-26-ctd1.con # datcnv_skipover = 0 # datcnv_ox_hysteresis_correction = no # wildedit_date = Jun 23 2009 09:25:25, 7.18c # wildedit_in = Q:\Cruise_Data_Processing\2009-26\Processing\convert\2009-26-001 8.cnv # wildedit_pass1_nstd = 2.0 # wildedit_pass2_nstd = 5.0 # wildedit_pass2_mindelta = 0.000e+000 # wildedit_npoint = 50 # wildedit_vars = prDM t090C t190C c0S/m c1S/m # wildedit_excl_bad_scans = yes # celltm_date = Jun 23 2009 10:39:44, 7.18c # celltm_in = Q:\Cruise_Data_Processing\2009-26\Processing\wildedit\2009-26-0018 .cnv # celltm_alpha = 0.0245, 0.0200 # celltm_tau = 9.5000, 7.0000 # celltm_temp_sensor_use_for_cond = primary, secondary # Derive_date = Jun 23 2009 10:48:30, 7.18c # Derive_in = Q:\Cruise_Data_Processing\2009-26\Processing\celltm\2009-26-0018.c nv Q:\Cruise_Data_Processing\2009-26\Processing\doc\2009-26-ctd1.con # derive_time_window_docdt = seconds: 2 # derive_ox_tau_correction = yes # file_type = ascii END* CTDEDIT was used to remove records corrupted by shed wakes around 86 and from the bottom of the cast. --------------------------------------------------------------------- Transmissivity and fluorescence data are nominal and unedited except that some records were removed in editing temperature and salinity. The dissolved oxygen data in the CTD files are considered: • ±0.4 ml/l from 0– 200db • ±0.1 ml/l below 200 db ********************************************************************************* Transmissometer #1005DR was calibrated in March 2008, and drifted significantly but steadily until July 2009; then a sudden shift occurred, so that maximum values between September 2009 and July 2010 were very low, ~25%/m. In August 2010 a study was made of transmissivity that led to a decision to apply post-processing corrections to all cruises between March 2008 and June 2010. Transmissivity data from this cruise were corrected by multiplying the original values by a correction factor, which was based on assumptions that deep offshore transmissivity from a June 2009 cruise should be about 62%/m and that drift was linear with time between March 2008 and July 2009. The corrections produced reasonable results for all cruises in that time period. For details on how the correction factor was derived see: OSD_Data_Archive:\Cruise_Data\DOCUMENTS\Transmissometer 1005DR Corrections.doc These data should be considered estimates. ********************************************************************************* *CALIBRATION $TABLE: CORRECTED CHANNELS ! Name Units Fmla Pad Coefficients ! ---------------------- --------- ---- ------ ------------ Oxygen:Dissolved:SBE mL/L 10 -99 () (0.88E-02 1.0388) Transmissivity %/metre 10 -99 () (0 1.23) $END !--1--- ---2---- --3-- ---4--- --5--- --6--- --7--- --8-- ---9---- -10- !Pressu Temperat Trans Fluores PAR PAR: Oxygen Oxyge Salinity Numb !re ure: missi cence: Refere : n: :T1:C1 er_o ! Secondar vity URU: nce Dissol Disso ~bin ! y Seapoin ved: lved: _rec ! t SBE SBE ords !------ -------- ----- ------- ------ ------ ------ ----- -------- ---- *END OF HEADER 2.2 7.6972 44.4 2.020 75.6 139.1 5.76 251.0 31.6378 23 3.0 7.6971 44.4 2.035 56.9 138.8 5.77 251.5 31.6338 29 4.0 7.6967 44.2 1.979 46.5 137.3 5.78 251.8 31.6277 27 5.0 7.6970 44.3 1.949 38.4 137.2 5.77 251.3 31.6302 32 6.0 7.6971 44.4 1.959 32.4 136.4 5.74 250.3 31.6375 24 7.0 7.6938 44.4 1.805 26.8 137.2 5.72 249.2 31.6598 21 8.0 7.6904 44.5 1.876 22.2 137.2 5.69 248.1 31.6731 24 9.0 7.6800 44.5 1.842 18.5 137.2 5.67 247.0 31.7079 29 10.0 7.6696 44.4 1.741 15.5 136.5 5.63 245.3 31.7448 31 11.0 7.6661 44.3 1.738 13.1 135.2 5.60 243.9 31.7581 24 12.0 7.6706 44.2 1.693 11.2 135.2 5.54 241.4 31.7724 19 13.0 7.6621 43.9 1.702 9.4 135.2 5.47 238.2 31.8324 23 14.0 7.6463 43.3 1.590 7.8 135.2 5.37 233.8 31.8789 33 15.0 7.6255 42.6 1.451 6.5 135.2 5.28 230.2 31.9478 32 16.0 7.6280 41.3 1.394 5.5 135.2 5.24 228.1 31.9903 23 17.0 7.6256 40.7 1.361 4.7 135.2 5.20 226.4 32.0196 22 18.0 7.6117 41.0 1.298 4.0 135.2 5.17 225.1 32.0370 23 19.0 7.5873 41.7 1.266 3.4 135.2 5.13 223.6 32.0570 24 20.0 7.5588 42.8 1.166 2.8 135.2 5.10 222.0 32.0705 27 21.0 7.5369 43.3 1.126 2.4 133.9 5.06 220.2 32.1034 26 22.0 7.5522 42.2 1.094 2.0 133.3 5.04 219.6 32.1250 23 23.0 7.5539 41.9 1.083 1.7 133.3 5.03 219.2 32.1287 26 24.0 7.5523 42.1 1.055 1.4 133.3 5.03 218.9 32.1314 30 25.0 7.5508 42.3 1.088 1.1 133.3 5.01 218.4 32.1335 31 26.0 7.5469 42.9 1.053 1.0 133.3 5.00 217.7 32.1366 26 27.0 7.5447 43.2 1.018 0.8 133.3 5.00 217.6 32.1383 21 28.0 7.5434 43.5 0.996 0.7 133.3 5.00 217.9 32.1399 21 29.0 7.5400 43.7 1.000 0.6 133.3 5.00 217.9 32.1430 22 30.0 7.5395 43.8 1.032 0.5 133.3 5.00 217.7 32.1437 27 31.0 7.5363 43.9 1.067 0.4 133.3 4.99 217.4 32.1461 27 32.0 7.5326 44.4 0.960 0.3 133.3 4.98 216.7 32.1500 32 33.0 7.5315 44.5 0.977 0.3 133.0 4.96 216.1 32.1541 30 34.0 7.5321 44.4 0.967 0.3 131.5 4.95 215.7 32.1574 21 35.0 7.5312 44.7 0.952 0.2 131.7 4.94 215.0 32.1712 19 36.0 7.5332 44.0 0.928 0.2 132.7 4.92 214.2 32.1823 19 37.0 7.5333 43.7 0.925 0.2 133.2 4.90 213.3 32.1902 25 38.0 7.5318 43.3 0.971 0.1 133.3 4.88 212.6 32.2018 31 39.0 7.5307 43.0 0.937 0.1 132.3 4.86 211.7 32.2065 30 40.0 7.5308 42.6 0.941 0.1 131.3 4.83 210.2 32.2110 21 41.0 7.5206 41.0 0.940 0.1 131.3 4.78 208.2 32.2500 20 42.0 7.5138 39.8 0.932 0.1 131.3 4.76 207.2 32.2719 22 43.0 7.5111 40.6 0.928 0.1 131.3 4.76 207.1 32.2758 25 44.0 7.5095 41.1 0.921 0.0 131.4 4.76 207.2 32.2778 26 45.0 7.5085 41.2 0.934 0.0 131.4 4.76 207.3 32.2788 27 46.0 7.5087 41.0 0.886 0.0 131.5 4.76 207.1 32.2787 30 47.0 7.5083 41.0 0.874 0.0 131.5 4.75 206.8 32.2796 32 48.0 7.5083 40.7 0.859 0.0 131.3 4.74 206.5 32.2799 27 49.0 7.5083 40.5 0.869 0.0 131.6 4.75 206.7 32.2800 21 50.0 7.5080 40.5 0.894 0.0 132.2 4.75 206.8 32.2803 20 51.0 7.5077 40.7 0.922 0.0 133.2 4.74 206.3 32.2804 24 52.0 7.5078 40.8 0.862 0.0 133.3 4.72 205.6 32.2805 24 53.0 7.5077 41.2 0.881 0.0 133.3 4.72 205.4 32.2820 24 54.0 7.5022 41.0 0.902 0.0 133.3 4.69 204.3 32.3037 23 55.0 7.4914 40.1 0.845 0.0 133.3 4.67 203.3 32.3271 30 56.0 7.4840 39.4 0.827 0.0 133.3 4.65 202.5 32.3345 30 57.0 7.4815 39.2 0.863 0.0 133.3 4.63 201.7 32.3449 23 58.0 7.4776 39.0 0.827 0.0 133.3 4.61 200.6 32.3550 21 59.0 7.4717 38.7 0.779 0.0 133.3 4.58 199.3 32.3691 23 60.0 7.4620 37.9 0.797 0.0 133.3 4.55 198.3 32.3891 29 61.0 7.4577 37.5 0.780 0.0 133.3 4.53 197.3 32.4000 32 62.0 7.4516 37.0 0.800 0.0 133.3 4.50 196.1 32.4127 26 63.0 7.4427 35.5 0.792 0.0 133.3 4.48 195.1 32.4282 24 64.0 7.4370 34.1 0.822 0.0 133.3 4.46 194.1 32.4400 26 65.0 7.4317 33.2 0.781 0.0 133.9 4.44 193.4 32.4522 27 66.0 7.4310 33.2 0.809 0.0 134.4 4.42 192.5 32.4571 30 67.0 7.4292 33.3 0.739 0.0 135.1 4.39 191.4 32.4664 26 68.0 7.4271 33.6 0.759 0.0 135.2 4.37 190.4 32.4779 26 69.0 7.4234 34.2 0.716 0.0 135.2 4.36 189.9 32.4902 21 70.0 7.4212 34.6 0.695 0.0 135.2 4.35 189.6 32.4961 22 71.0 7.4200 34.6 0.705 0.0 135.2 4.35 189.3 32.4987 23 72.0 7.4172 34.8 0.747 0.0 135.2 4.35 189.2 32.5056 28 73.0 7.4165 34.6 0.707 0.0 135.3 4.33 188.6 32.5074 31 74.0 7.4156 34.7 0.678 0.0 135.2 4.32 188.3 32.5095 27 75.0 7.4111 33.0 0.710 0.0 135.5 4.31 187.7 32.5182 23 76.0 7.4093 32.7 0.690 0.0 136.5 4.30 187.3 32.5214 23 77.0 7.4081 32.3 0.718 0.0 137.2 4.30 187.2 32.5234 24 78.0 7.4067 32.1 0.744 0.0 137.2 4.30 187.2 32.5256 24 79.0 7.4047 31.5 0.698 0.0 137.2 4.29 186.7 32.5293 26 80.0 7.4023 31.4 0.706 0.0 137.2 4.29 186.6 32.5348 34 81.0 7.4025 31.4 0.709 0.0 137.2 4.28 186.5 32.5347 30 82.0 7.4032 31.5 0.714 0.0 137.5 4.28 186.6 32.5335 26 83.0 7.4023 31.0 0.710 0.0 138.6 4.28 186.2 32.5356 26 84.0 7.3974 29.6 0.747 0.0 139.1 4.25 185.1 32.5466 46 85.0 7.3887 29.6 0.732 0.0 139.1 4.22 183.6 32.5652 32 85.9 7.3825 27.7 0.710 0.0 139.4 4.21 183.1 32.5776 17 87.1 7.3813 24.6 0.724 0.0 141.1 4.20 182.8 32.5788 42 87.9 7.3775 23.7 0.733 0.0 141.1 4.18 182.2 32.5876 63 89.0 7.3747 23.5 0.730 0.0 141.2 4.16 181.0 32.5936 33 90.1 7.3622 19.8 0.726 0.0 141.9 4.11 178.9 32.6222 52 90.8 7.3556 15.1 0.749 0.0 142.9 4.10 178.4 32.6388 48