Parameter values: Sort by alphabetical glider order
ID | 248 | TGT_AUTO_DEFAULT | 0 | VBD_MIN | 500 | MOTHERBOARD | 6 |
MISSION | 4 | SM_CC | 450 | VBD_MAX | 3960 | DEVICE1 | -1 |
DIVE | 77 | N_FILEKB | 4 | C_VBD | 3135 | DEVICE2 | -1 |
N_DIVES | 0 | FILEMGR | 0 | VBD_DBAND | 2 | DEVICE3 | -1 |
STOP_T | 0 | CALL_NDIVES | 1 | VBD_CNV | -0.24529999 | DEVICE4 | -1 |
D_SURF | 2 | COMM_SEQ | 7 | VBD_LP_IGNORE | 0 | DEVICE5 | -1 |
D_FLARE | 3 | PROTOCOL | 9 | VBD_TIMEOUT | 720 | DEVICE6 | -1 |
D_TGT | 180 | N_NOCOMM | 2 | PITCH_VBD_SHIFT | 0.0014 | LOGGERS | 3 |
D_ABORT | 1010 | NOCOMM_ACTION | 131 | UNCOM_BLEED | 20 | LOGGERDEVICE1 | 7 |
D_NO_BLEED | 500 | N_NOSURFACE | 0 | VBD_MAXERRORS | 1 | LOGGERDEVICE2 | 19 |
D_BOOST | 0 | UPLOAD_DIVES_MAX | -1 | C_VBD_AUTO_DELTA | 0 | LOGGERDEVICE3 | 72 |
T_BOOST | 0 | CALL_TRIES | 5 | C_VBD_AUTO_MAX | 0 | LOGGERDEVICE4 | -1 |
D_FINISH | 0 | CALL_WAIT | 60 | W_ADJ_DBAND | 3 | COMPASS_DEVICE | 66 |
D_PITCH | 0 | CAPUPLOAD | 0 | DBDW | 0 | COMPASS2_DEVICE | -1 |
D_SAFE | 0 | CAPMAXSIZE | 100000 | LOITER_W_DBAND | 0 | PHONE_DEVICE | 33 |
D_CALL | 0 | T_GPS | 5 | LOITER_DBDW | 0 | GPS_DEVICE | 48 |
SURFACE_URGENCY | 0 | N_GPS | 100440 | LOITER_D_TOP | 0 | RAFOS_DEVICE | -1 |
SURFACE_URGENCY_TRY | 0 | T_RSLEEP | 1 | LOITER_D_BOTTOM | 0 | NAV_DEVICE | -1 |
SURFACE_URGENCY_FORCE | 0 | STROBE | 0 | LOITER_N_DIVE | 0 | NAV2_DEVICE | -1 |
T_DIVE | 90 | RAFOS_PEAK_OFFSET | 0 | CF8_MAXERRORS | 20 | NETWORK_DEVICE | -1 |
T_MISSION | 110 | RAFOS_CORR_THRESH | 60 | AH0_24V | 575 | PRESSURE_DEVICE | 34 |
T_ABORT | 1440 | RAFOS_HIT_WINDOW | 3600 | AH0_10V | 0 | XPDR_DEVICE | 21 |
T_TURN | 225 | RAFOS_MMODEM | 0 | MINV_24V | 11 | SIM_W | 0 |
T_TURN_SAMPINT | -5 | PITCH_MIN | 205 | MINV_10V | 11 | SEABIRD_T_G | 0.0044151177 |
T_NO_W | 120 | PITCH_MAX | 3600 | MAXI_24V | 5 | SEABIRD_T_H | 0.00064099889 |
T_LOITER | 0 | C_PITCH | 2470 | MAXI_10V | 1.5 | SEABIRD_T_I | 2.58445e-05 |
T_EPIRB | 0 | PITCH_DBAND | 0.1 | FG_AHR_10V | 27.303692 | SEABIRD_T_J | 3.0430085e-06 |
USE_BATHY | -10 | PITCH_CNV | 0.0041299998 | FG_AHR_24V | 27.963663 | SEABIRD_C_G | -9.9848051 |
USE_ICE | 0 | PITCH_GAIN | 20 | PHONE_SUPPLY | 2 | SEABIRD_C_H | 1.1086454 |
ICE_FREEZE_MARGIN | 0.30000001 | PITCH_TIMEOUT | 30 | PRESSURE_YINT | -180.43257 | SEABIRD_C_I | -0.0025343813 |
D_OFFGRID | 1000 | PITCH_MAXERRORS | 1 | PRESSURE_SLOPE | 0.00022536858 | SEABIRD_C_J | 0.00025995917 |
RELAUNCH | 1 | PITCH_ADJ_GAIN | 0 | COMPASS_USE | 49156 | OPTIONS | 0 |
APOGEE_PITCH | -5 | PITCH_ADJ_DBAND | 0 | ALTIM_PING_FIT | 0 | SC_RECORDABOVE | 2000.0 |
MAX_BUOY | 180 | C_PITCH_AUTO_DELTA | 0 | ALTIM_TOP_PING_RANGE | 0 | SC_PROFILE | 3.0 |
GLIDE_SLOPE | 30 | C_PITCH_AUTO_MAX | 0 | ALTIM_BOTTOM_TURN_MARGIN | 0 | SC_XMITPROFILE | 3.0 |
SPEED_FACTOR | 1 | PITCH_GAIN_AUTO_DELTA | 0 | ALTIM_TOP_TURN_MARGIN | 0 | SC_NDIVE | 1.0 |
RHO | 1.0275 | PITCH_GAIN_AUTO_MAX | 0 | ALTIM_TOP_MIN_OBSTACLE | 1 | TM_RECORDABOVE | 200.0 |
MASS | 75305 | PITCH_W_GAIN | 2 | ALTIM_PING_DEPTH | 0 | TM_PROFILE | 1.0 |
NAV_MODE | 2 | PITCH_W_DBAND | 0.5 | ALTIM_PING_DELTA | 0 | TM_XMITPROFILE | 3.0 |
FERRY_MAX | 45 | ROLL_MIN | 265 | ALTIM_FREQUENCY | 13 | TM_NDIVE | 1.0 |
KALMAN_USE | 2 | ROLL_MAX | 3870 | ALTIM_PULSE | 3 | TM_XMITRAW | 0.0 |
HD_A | 0.003 | ROLL_DEG | 80 | ALTIM_SENSITIVITY | 2 | TM_LOGSAMPLE | 0.0 |
HD_B | 0.0099999998 | C_ROLL_DIVE | 2900 | XPDR_VALID | 4 | CP_RECORDABOVE | 0.0 |
HD_C | 1.6e-05 | C_ROLL_CLIMB | 2300 | XPDR_INHIBIT | 90 | CP_PROFILE | 0.0 |
HEADING | -1 | HEAD_ERRBAND | 10 | XPDR_INT | 0 | CP_XMITPROFILE | 0.0 |
ESCAPE_HEADING | 0 | ROLL_CNV | 0.054945 | XPDR_REP | 0 | CP_UPLOADMAX | 0.0 |
ESCAPE_HEADING_DELTA | 10 | ROLL_TIMEOUT | 15 | INT_PRESSURE_SLOPE | 1.9639999e-06 | CP_STARTS | 0.0 |
FIX_MISSING_TIMEOUT | 0 | ROLL_MAXERRORS | 1 | INT_PRESSURE_YINT | 0 | CP_NDIVE | 1.0 |
TGT_DEFAULT_LAT | 4736 | ROLL_ADJ_GAIN | 0 | DEEPGLIDER | 0 | ||
TGT_DEFAULT_LON | -12218 | ROLL_ADJ_DBAND | 0 | DEEPGLIDERMB | 0 |
Pre-dive calculations and measurements:
GPS1 |   281022,092032,3636.449,-12446.244,20,0.9,21,13.3 | TGT_RADIUS |   2000.000 |
_CALLS |   1 | KALMAN_CONTROL |   0.000,0.000 |
_SM_DEPTHo |   1.55 | KALMAN_X |   0.0,0.0,0.0,0.0,0.0 |
_SM_ANGLEo |   -69.0 | KALMAN_Y |   0.0,0.0,0.0,0.0,0.0 |
GPS2 |   281022,092647,3636.433,-12446.148,2,0.7,4,13.3 | MHEAD_RNG_PITCHd_Wd |   183.7,831,-16.1,-6.667,-20.70,1936,0.154 |
SPEED_LIMITS |   0.115,0.237 | D_GRID |   1000 |
TGT_NAME |   pickup | IRON |   1.000000,0.050867,-0.027148,-0.041418,1.036505,-0.047304,-0.041761,-0.061604,1.038738,751.954590,-987.656311,313.353058 |
TGT_LATLONG |   3636.000,-12446.000 |
Post-dive calculations and measurements:
WARN |   HTMICL TMICL logging already stopped | _10V_AH |   15.00,0.000 |
FINISH |   0.1,1.010639 | FG_AHR_24Vo |   28.087 |
SM_CCo |   5155.47,73.61,0.835,0,1301.4,1421.3,1181.6,449.77 | FG_AHR_10Vo |   27.374 |
SM_GC |   1.62,73.61,16.34,1.62,0.835,0.050,0.080,1301.4,1421.3,1181.6,187.9,2911.9,0,0,0,12.97,15.95,15.97 | MEM0 |   60148,1,0,0 |
SUPER |   19,71,254,1,0,0 | MEM1 |   65508,1,0,0 |
IRIDIUM_FIX |   3635.98,-12447.65,281022,064548 | MEM2 |   910752,33,135516,82 |
TCM_TEMP |   17.10 | DATA_FILE_SIZE |   22524,834 |
XPDR_PINGS |   0,10.3,13.6 | CAP_FILE_SIZE |   200280,0 |
SC_FREEKB |   3814624 | SDSIZE |   3887104,3850528 |
TM_FREEKB |   7397568 | SDFILEDIR |   577,1 |
HUMID |   49.22 | ERRORS |   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 |
TEMP |   13.37 | CURRENT |   0.243, 93.9,1 |
INTERNAL_PRESSURE |   8.80105 | IMPLIED_C_PITCH |   2491,16.78,527,0.0,0.00 |
_24V_AH |   15.07,35.678 | GPS |   281022,105325,3636.085,-12445.508,2,1.8,5,13.3 |
Energy measurements:
device | secs | mA | J | sensor | secs | mA | J |
VBD_pump | 508 | 1045 | 8013.64 | nil | 0 | 0 | 0.00 |
Pitch_motor | 36 | 256 | 140.32 | nil | 0 | 0 | 0.00 |
Roll_motor | 84 | 129 | 164.76 | nil | 0 | 0 | 0.00 |
Iridium | 293 | 202 | 892.49 | nil | 0 | 0 | 0.00 |
Transponder_ping | 0 | 420 | 0.00 | nil | 0 | 0 | 0.00 |
GPS | 13 | 15 | 3.10 | nil | 0 | 0 | 0.00 |
Core | 2985 | 6 | 304.53 | SciCon | 5074 | 31 | 2401.19 |
Fast | 5 | 0 | 0.00 | TMICL | 1639 | 19 | 472.79 |
Slow | 0 | 0 | 0.00 | NCP | 0 | 0 | 0.00 |
LPSleep | 2442 | 2 | 73.27 | ||||
Compass | 1663 | 5 | 124.80 | ||||
RAFOS | 0 | 0 | 0.00 | ||||
Transponder | 0 | 0 | 0.00 | ||||
Compass2 | 0 | 0 | 0.00 | ||||
Altimeter Analysis:
m=0.0,R=0.0,N=0 | m=0.6,R=0.8,N=2 | ||||||||
depth | range | fit R | obstacle | m | R | fit R | obstacle | m | R |
Guidance and control:
st_secs | flags | vbd_ctl | pitch_ctl | roll_ctl | vbd_ad_start | vbd_pot1_ad_start | vbd_pot2_ad_start | pitch_ad_start | roll_ad_start | depth | ob_vertv | data_pts | end_secs | vbd_secs | pitch_secs | roll_secs | vbd_i | pitch_i | roll_i | vbd_ad | vbd_pot1_ad | vbd_pot2_ad | pitch_ad | roll_ad | vbd_errors | pitch_errors | roll_errors | vbd_volts | pitch_volts | roll_volts |
16 | end surface: CONTROL_FINISHED_OK | |||||||||||||||||||||||||||||
state | 16 | begin dive | ||||||||||||||||||||||||||||
16.20 | 16386 | -85.84 | -0.93 | 0.00 | 1287.3 | 1396.4 | 1178.2 | 186.7 | 2929.1 | 0.00 | 0.00 | 0 | 69.87 | 50.72 | 0.00 | 0.00 | 0.005 | 0.000 | 0.000 | 2737.44 | 2762.56 | 2712.31 | 186.62 | 2929.00 | 0 | 0 | 0 | 15.76 | 30.00 | 30.00 |
70.10 | 18727 | -148.15 | -1.01 | 80.00 | 2737.9 | 2763.4 | 2712.4 | 186.7 | 2929.5 | 3.13 | -3.36 | 10 | 118.37 | 21.10 | 16.05 | 2.51 | 0.006 | 0.257 | 0.119 | 3739.94 | 3780.25 | 3699.62 | 2222.44 | 3880.75 | 0 | 0 | 0 | 15.78 | 15.67 | 15.75 |
346.39 | 1028 | -148.15 | -1.01 | 0.00 | 3745.9 | 3783.8 | 3707.9 | 2222.5 | 3880.4 | 59.05 | -15.74 | 65 | 352.58 | 0.00 | 0.00 | 2.33 | 0.000 | 0.000 | 0.030 | 3746.31 | 3784.56 | 3708.06 | 2222.19 | 2823.62 | 0 | 0 | 0 | 30.00 | 30.00 | 15.90 |
536.45 | 260 | -148.15 | -1.01 | 80.00 | 3747.0 | 3786.4 | 3707.6 | 2222.8 | 2823.6 | 81.50 | -11.23 | 103 | 542.69 | 0.00 | 0.00 | 2.79 | 0.000 | 0.000 | 0.114 | 3746.94 | 3786.44 | 3707.44 | 2222.25 | 3879.38 | 0 | 0 | 0 | 30.00 | 30.00 | 15.93 |
770.72 | 9222 | -148.15 | -1.01 | 0.00 | 3748.9 | 3787.2 | 3710.6 | 2222.4 | 3880.1 | 110.93 | -12.61 | 150 | 777.65 | 0.00 | 0.00 | 2.30 | 0.000 | 0.000 | 0.029 | 3749.78 | 3787.56 | 3712.00 | 2221.56 | 2822.12 | 0 | 0 | 0 | 30.00 | 30.00 | 15.97 |
1086.49 | 8454 | -148.15 | -1.01 | 80.00 | 3750.2 | 3788.9 | 3711.6 | 2222.8 | 2821.5 | 139.67 | -8.04 | 182 | 1092.04 | 0.00 | 0.00 | 2.79 | 0.000 | 0.000 | 0.115 | 3750.34 | 3789.38 | 3711.31 | 2221.88 | 3880.38 | 0 | 0 | 0 | 30.00 | 30.00 | 15.97 |
1226.55 | 9222 | -148.15 | -1.01 | 0.00 | 3750.5 | 3789.2 | 3711.8 | 2222.4 | 3879.4 | 154.86 | -11.52 | 210 | 1231.98 | 0.00 | 0.00 | 2.30 | 0.000 | 0.000 | 0.029 | 3750.16 | 3789.19 | 3711.12 | 2222.38 | 2820.81 | 0 | 0 | 0 | 30.00 | 30.00 | 16.02 |
1507 | end dive: TARGET_DEPTH_EXCEEDED | |||||||||||||||||||||||||||||
state | 1507 | begin apogee | ||||||||||||||||||||||||||||
1508.91 | 10243 | 0.00 | -0.25 | 0.00 | 3751.5 | 3791.1 | 3711.9 | 2222.7 | 2247.4 | 180.57 | -9.21 | 239 | 1623.71 | 110.24 | 1.26 | 0.17 | 1.046 | 0.124 | 0.130 | 3134.06 | 3231.25 | 3036.88 | 2410.56 | 2337.81 | 0 | 0 | 0 | 13.09 | 15.99 | 15.64 |
1626 | end apogee: CONTROL_FINISHED_OK | |||||||||||||||||||||||||||||
state | 1626 | begin climb | ||||||||||||||||||||||||||||
1625.57 | 10759 | 148.15 | 1.01 | -80.00 | 3133.6 | 3230.6 | 3036.5 | 2410.8 | 2337.2 | 184.21 | 0.00 | 250 | 1745.85 | 109.03 | 2.00 | 3.85 | 1.018 | 0.085 | 0.080 | 2527.59 | 2628.19 | 2427.00 | 2718.19 | 830.19 | 0 | 0 | 0 | 12.89 | 15.69 | 15.43 |
1793.14 | 17414 | 148.15 | 1.01 | 0.00 | 2520.8 | 2616.8 | 2424.8 | 2718.3 | 830.2 | 178.47 | 6.21 | 283 | 1799.61 | 0.00 | 0.00 | 3.51 | 0.000 | 0.000 | 0.036 | 2520.28 | 2616.62 | 2423.94 | 2719.44 | 2328.81 | 0 | 0 | 0 | 30.00 | 30.00 | 15.64 |
2108.91 | 16646 | 148.15 | 1.01 | 80.00 | 2517.6 | 2617.0 | 2418.2 | 2718.9 | 2328.6 | 158.09 | 6.88 | 315 | 2113.95 | 0.00 | 0.00 | 3.74 | 0.000 | 0.000 | 0.104 | 2518.44 | 2617.75 | 2419.12 | 2718.81 | 3764.44 | 0 | 0 | 0 | 30.00 | 30.00 | 15.81 |
2173.20 | 17414 | 148.15 | 1.01 | 0.00 | 2517.8 | 2616.1 | 2419.6 | 2719.4 | 3764.0 | 152.26 | 9.04 | 328 | 2179.65 | 0.00 | 0.00 | 3.43 | 0.000 | 0.000 | 0.028 | 2518.88 | 2616.81 | 2420.94 | 2718.12 | 2251.38 | 0 | 0 | 0 | 30.00 | 30.00 | 15.78 |
2489.00 | 16710 | 148.15 | 1.03 | 80.00 | 2515.7 | 2615.2 | 2416.1 | 2718.6 | 2250.2 | 131.99 | 6.05 | 360 | 2495.09 | 0.00 | 0.00 | 3.94 | 0.000 | 0.000 | 0.102 | 2514.41 | 2613.44 | 2415.38 | 2718.50 | 3768.25 | 0 | 0 | 0 | 30.00 | 30.00 | 15.92 |
2584.02 | 17478 | 148.15 | 1.06 | 0.00 | 2516.4 | 2615.0 | 2417.8 | 2718.8 | 3768.1 | 127.11 | 4.83 | 379 | 2589.01 | 0.00 | 0.00 | 3.43 | 0.000 | 0.000 | 0.029 | 2517.31 | 2615.56 | 2419.06 | 2719.12 | 2250.69 | 0 | 0 | 0 | 30.00 | 30.00 | 15.95 |
2894.07 | 16710 | 148.15 | 1.11 | 80.00 | 2513.9 | 2613.6 | 2414.3 | 2718.7 | 2247.9 | 115.61 | 4.34 | 411 | 2900.15 | 0.00 | 0.00 | 3.93 | 0.000 | 0.000 | 0.103 | 2513.84 | 2613.19 | 2414.50 | 2717.94 | 3765.50 | 0 | 0 | 0 | 30.00 | 30.00 | 15.97 |
3093.40 | 11303 | 208.36 | 1.19 | 0.00 | 2514.4 | 2613.1 | 2415.8 | 2718.8 | 3764.7 | 107.02 | 3.47 | 451 | 3145.10 | 44.88 | 0.25 | 3.47 | 1.008 | 0.077 | 0.029 | 2282.56 | 2396.25 | 2168.88 | 2768.81 | 2245.94 | 0 | 0 | 0 | 13.03 | 16.00 | 16.00 |
3449.19 | 16710 | 208.36 | 1.23 | 80.00 | 2273.5 | 2383.2 | 2163.9 | 2768.9 | 2245.5 | 88.64 | 4.89 | 513 | 3454.98 | 0.00 | 0.00 | 3.98 | 0.000 | 0.000 | 0.102 | 2273.50 | 2383.44 | 2163.56 | 2768.25 | 3763.88 | 0 | 0 | 0 | 30.00 | 30.00 | 15.91 |
3684.23 | 17478 | 208.36 | 1.27 | 0.00 | 2272.2 | 2380.6 | 2163.8 | 2767.9 | 3764.1 | 75.52 | 4.53 | 560 | 3689.93 | 0.00 | 0.00 | 3.48 | 0.000 | 0.000 | 0.029 | 2273.69 | 2382.31 | 2165.06 | 2767.56 | 2248.31 | 0 | 0 | 0 | 30.00 | 30.00 | 15.96 |
3874.26 | 10535 | 267.07 | 1.35 | 80.00 | 2270.6 | 2379.8 | 2161.4 | 2768.9 | 2246.4 | 69.23 | 3.55 | 598 | 3926.01 | 43.65 | 0.18 | 4.02 | 0.968 | 0.083 | 0.102 | 2044.84 | 2168.19 | 1921.50 | 2808.31 | 3764.81 | 0 | 0 | 0 | 13.16 | 15.97 | 15.82 |
4054.27 | 1028 | 267.07 | 1.35 | 0.00 | 2038.3 | 2156.7 | 1919.9 | 2810.4 | 3763.5 | 56.18 | 8.88 | 634 | 4060.01 | 0.00 | 0.00 | 3.51 | 0.000 | 0.000 | 0.029 | 2039.22 | 2157.50 | 1920.94 | 2809.50 | 2254.31 | 0 | 0 | 0 | 30.00 | 30.00 | 15.89 |
4244.31 | 16710 | 267.07 | 1.37 | 80.00 | 2035.8 | 2155.3 | 1916.4 | 2810.2 | 2251.6 | 44.14 | 6.01 | 672 | 4250.11 | 0.00 | 0.00 | 3.94 | 0.000 | 0.000 | 0.103 | 2035.38 | 2154.75 | 1916.00 | 2810.19 | 3765.06 | 0 | 0 | 0 | 30.00 | 30.00 | 15.91 |
4269.31 | 17414 | 267.07 | 1.37 | 0.00 | 2035.2 | 2154.4 | 1915.9 | 2810.4 | 3763.9 | 42.26 | 6.76 | 677 | 4275.02 | 0.00 | 0.00 | 3.46 | 0.000 | 0.000 | 0.029 | 2035.94 | 2155.44 | 1916.44 | 2810.25 | 2256.75 | 0 | 0 | 0 | 30.00 | 30.00 | 15.94 |
4459.35 | 8742 | 342.70 | 1.47 | -80.00 | 2032.8 | 2152.2 | 1913.4 | 2810.4 | 2254.9 | 34.74 | 2.65 | 715 | 4521.18 | 55.26 | 0.00 | 3.66 | 0.918 | 0.000 | 0.087 | 1736.00 | 1871.56 | 1600.44 | 2809.12 | 829.06 | 0 | 0 | 0 | 13.07 | 30.00 | 15.76 |
4614.35 | 19527 | 342.70 | 1.52 | 0.00 | 1727.5 | 1856.7 | 1598.3 | 2810.6 | 828.9 | 29.78 | 4.42 | 746 | 4620.14 | 0.00 | 0.17 | 3.52 | 0.000 | 0.081 | 0.037 | 1728.03 | 1857.94 | 1598.12 | 2851.00 | 2326.12 | 0 | 0 | 0 | 30.00 | 15.85 | 15.86 |
4804.38 | 16710 | 342.70 | 1.54 | 80.00 | 1723.7 | 1853.6 | 1593.8 | 2851.1 | 2327.1 | 19.85 | 5.64 | 784 | 4810.13 | 0.00 | 0.00 | 3.74 | 0.000 | 0.000 | 0.105 | 1724.38 | 1854.12 | 1594.62 | 2851.25 | 3765.19 | 0 | 0 | 0 | 30.00 | 30.00 | 15.90 |
4949.37 | 17414 | 342.70 | 1.54 | 0.00 | 1722.2 | 1850.2 | 1594.1 | 2851.9 | 3764.9 | 7.28 | 9.30 | 813 | 4955.11 | 0.00 | 0.00 | 3.46 | 0.000 | 0.000 | 0.029 | 1722.38 | 1850.88 | 1593.88 | 2852.12 | 2253.62 | 0 | 0 | 0 | 30.00 | 30.00 | 15.92 |
5020 | end climb: SURFACE_DEPTH_REACHED | |||||||||||||||||||||||||||||
state | 5020 | begin surface coast | ||||||||||||||||||||||||||||
5055 | end surface coast: CONTROL_FINISHED_OK | |||||||||||||||||||||||||||||
state | 5055 | begin surface |