Parameter values: Sort by alphabetical glider order
ID | 141 | HD_C | 9.9999997e-06 | PITCH_MAXERRORS | 1 | ALTIM_TOP_PING_RANGE | 0 |
MISSION | 7 | HEADING | -1 | PITCH_ADJ_GAIN | 0.02 | ALTIM_BOTTOM_TURN_MARGIN | 0 |
DIVE | 373 | ESCAPE_HEADING | 0 | PITCH_ADJ_DBAND | 2 | ALTIM_TOP_TURN_MARGIN | 0 |
D_SURF | 3 | ESCAPE_HEADING_DELTA | 10 | ROLL_MIN | 157 | ALTIM_TOP_MIN_OBSTACLE | 1 |
D_FLARE | 3 | FIX_MISSING_TIMEOUT | 0 | ROLL_MAX | 3732 | ALTIM_PING_DEPTH | 0 |
D_TGT | 990 | TGT_DEFAULT_LAT | 5900 | ROLL_DEG | 30 | ALTIM_PING_DELTA | 0 |
D_ABORT | 1040 | TGT_DEFAULT_LON | -2030 | C_ROLL_DIVE | 2030 | ALTIM_FREQUENCY | 14 |
D_NO_BLEED | 350 | TGT_AUTO_DEFAULT | 0 | C_ROLL_CLIMB | 1985 | ALTIM_PULSE | 3 |
D_FINISH | 0 | SM_CC | 200 | HEAD_ERRBAND | 15 | ALTIM_SENSITIVITY | 1 |
D_PITCH | 0 | N_FILEKB | 4 | ROLL_CNV | 0.028270001 | INT_PRESSURE_SLOPE | 0.0097660003 |
D_SAFE | 0 | FILEMGR | 0 | ROLL_TIMEOUT | 15 | INT_PRESSURE_YINT | 0 |
D_CALL | 0 | CALL_NDIVES | 1 | R_PORT_OVSHOOT | 14 | DEEPGLIDER | 0 |
SURFACE_URGENCY | 0 | COMM_SEQ | 0 | R_STBD_OVSHOOT | 20 | DEEPGLIDERMB | 0 |
SURFACE_URGENCY_TRY | 0 | KERMIT | 0 | ROLL_AD_RATE | 325 | MOTHERBOARD | 4 |
SURFACE_URGENCY_FORCE | 0 | N_NOCOMM | 1 | ROLL_MAXERRORS | 1 | DEVICE1 | 2 |
T_DIVE | 330 | N_NOSURFACE | 0 | ROLL_ADJ_GAIN | 3 | DEVICE2 | 20 |
T_MISSION | 360 | UPLOAD_DIVES_MAX | -1 | ROLL_ADJ_DBAND | 0.029999999 | DEVICE3 | 53 |
T_ABORT | 720 | CALL_TRIES | 5 | VBD_MIN | 500 | DEVICE4 | 35 |
T_TURN | 225 | CALL_WAIT | 60 | VBD_MAX | 3955 | DEVICE5 | 87 |
T_TURN_SAMPINT | 5 | CAPUPLOAD | 0 | C_VBD | 3062 | DEVICE6 | -1 |
T_NO_W | 120 | CAPMAXSIZE | 100000 | VBD_DBAND | 2 | SMARTS | 0 |
USE_BATHY | 0 | HEAPDBG | 0 | VBD_CNV | -0.24529999 | SMARTDEVICE1 | -1 |
USE_ICE | 0 | T_GPS | 5 | VBD_TIMEOUT | 720 | SMARTDEVICE2 | -1 |
ICE_FREEZE_MARGIN | 0.30000001 | N_GPS | 20 | PITCH_VBD_SHIFT | 0.0012300001 | COMPASS_DEVICE | 33 |
D_OFFGRID | 100 | T_GPS_ALMANAC | 0 | VBD_PUMP_AD_RATE_SURFACE | 4 | PHONE_DEVICE | 48 |
T_WATCHDOG | 10 | T_GPS_CHARGE | -13054.021 | VBD_PUMP_AD_RATE_APOGEE | 4 | GPS_DEVICE | 32 |
RELAUNCH | 1 | T_RSLEEP | 3 | VBD_BLEED_AD_RATE | 8 | RAFOS_DEVICE | -1 |
APOGEE_PITCH | -5 | RAFOS_PEAK_OFFSET | 1.5 | UNCOM_BLEED | 20 | XPDR_DEVICE | 24 |
MAX_BUOY | 200 | RAFOS_CORR_THRESH | 60 | VBD_MAXERRORS | 1 | SIM_W | 0 |
COURSE_BIAS | 0 | RAFOS_HIT_WINDOW | 3600 | CF8_MAXERRORS | 20 | SIM_PITCH | 0 |
GLIDE_SLOPE | 30 | PITCH_MIN | 581 | AH0_24V | 86.599998 | SEABIRD_T_G | 0.0043133562 |
SPEED_FACTOR | 1 | PITCH_MAX | 3865 | AH0_10V | 100 | SEABIRD_T_H | 0.00062858552 |
RHO | 1.0273 | C_PITCH | 2780 | PRESSURE_YINT | -2.8638275 | SEABIRD_T_I | 2.3249919e-05 |
MASS | 52046 | PITCH_DBAND | 0.1 | PRESSURE_SLOPE | 9.1207337e-05 | SEABIRD_T_J | 2.3890996e-06 |
NAV_MODE | 2 | PITCH_CNV | 0.0046000001 | AD7714Ch0Gain | 64 | SEABIRD_C_G | -10.024263 |
FERRY_MAX | 0 | P_OVSHOOT | 0.039999999 | TCM_PITCH_OFFSET | 0 | SEABIRD_C_H | 1.1472844 |
KALMAN_USE | 2 | PITCH_GAIN | 13.5 | TCM_ROLL_OFFSET | 0 | SEABIRD_C_I | -0.00073099177 |
HD_A | 0.003 | PITCH_TIMEOUT | 15 | COMPASS_USE | 0 | SEABIRD_C_J | 0.00011512569 |
HD_B | 0.0099999998 | PITCH_AD_RATE | 175 | ALTIM_BOTTOM_PING_RANGE | 0 |
Pre-dive calculations and measurements:
GPS1 |   234137,6146.318,-2604.226,25,1.5,25,-18.6 | TGT_NAME |   SE |
_CALLS |   1 | TGT_LATLONG |   6145.370,-2600.200 |
_XMS_NAKs |   0 | TGT_RADIUS |   2000.000 |
_XMS_TOUTs |   0 | KALMAN_CONTROL |   0.000,0.000 |
_SM_DEPTHo |   0.92 | KALMAN_X |   0.0,0.0,0.0,0.0,0.0 |
_SM_ANGLEo |   -56.8 | KALMAN_Y |   0.0,0.0,0.0,0.0,0.0 |
GPS2 |   235017,6146.336,-2604.139,10,2.5,29,-18.6 | MHEAD_RNG_PITCHd_Wd |   136.0,3889,-23.0,-10.000 |
SPEED_LIMITS |   0.173,0.295 | D_GRID |   990 |
Post-dive calculations and measurements:
FINISH |   0.1,1.013617 | _24V_AH |   23.1,75.906 |
SM_CCo |   14603,25.20,0.649,0,0,2245,200.16 | _10V_AH |   10.5,73.698 |
SM_GC |   0.84,0.00,0.00,25.20,0.000,0.000,0.649,571,2060,2245,-10.16,0.85,200.16 | DATA_FILE_SIZE |   110513,1519 |
IRIDIUM_FIX |   6126.23,-2605.39,160997,181803 | CAP_FILE_SIZE |   133703,0 |
TT8_MAMPS |   0.042185 | CFSIZE |   260165632,221704192 |
HUMID |   1739 | ERRORS |   0,0,0,0,0,0,0,0,0,0,0,0,9,0,0 |
INTERNAL_PRESSURE |   10.0883 | CURRENT |   0.103,134.2,1 |
TCM_TEMP |   16.80 | GPS |   230608,035538,6144.591,-2559.090,29,1.0,29,-18.6 |
XPDR_PINGS |   984 |
Energy measurements:
device | secs | mA | J | sensor | secs | mA | J |
Pitch_motor | 25 | 199 | 117.47 | SBE_CT | 1050 | 24 | 582.37 |
Roll_motor | 76 | 139 | 247.49 | SBE_O2 | 1154 | 19 | 506.57 |
VBD_pump_during_apogee | 297 | 1274 | 8752.33 | Optode | 577 | 33 | 439.92 |
VBD_pump_during_surface | 25 | 648 | 377.73 | WL_BB2F | 1359 | 105 | 3298.25 |
VBD_valve | 0 | 0 | 0.00 | WL_BBFL2VMT | 0 | 105 | 0.00 |
Iridium_during_init | 30 | 103 | 72.89 | nil | 0 | 0 | 0.00 |
Iridium_during_connect | 31 | 160 | 116.28 | nil | 0 | 0 | 0.00 |
Iridium_during_xfer | 270 | 223 | 1393.61 | ||||
Transponder_ping | 246 | 420 | 2386.69 | ||||
Mmodem_TX | 0 | 0 | 0.00 | ||||
Mmodem_RX | 0 | 0 | 0.00 | ||||
GPS | 32 | 50 | 16.88 | ||||
TT8 | 3095 | 19 | 643.57 | ||||
LPSleep | 8033 | 2 | 184.73 | ||||
TT8_Active | 512 | 19 | 106.55 | ||||
TT8_Sampling | 2772 | 39 | 1158.47 | ||||
TT8_CF8 | 718 | 45 | 345.64 | ||||
TT8_Kalman | 0 | 0 | 0.00 | ||||
Analog_circuits | 1728 | 12 | 217.81 | ||||
GPS_charging | 0 | 0 | 0.00 | ||||
Compass | 2764 | 8 | 232.26 | ||||
RAFOS | 0 | 0 | 0.00 | ||||
Guidance and control:
st_secs | pitch_ctl | vbd_ctl | depth | ob_vertv | data_pts | end_secs | pitch_secs | roll_secs | vbd_secs | vbd_i | gcphase | pitch_i | roll_i | pitch_ad | roll_ad | vbd_ad |
19 | end surface: CONTROL_FINISHED_OK | |||||||||||||||
state | 19 | begin dive | ||||||||||||||
22 | -1.81 | -87.5 | 0.0 | 0.0 | 0 | 125 | 0.00 | 0.00 | -99.25 | 0.000 | 6 | 0.000 | 0.000 | 570 | 2034 | 3419 |
128 | -1.91 | -168.5 | 2.3 | -3.8 | 13 | 159 | 10.52 | 1.90 | -9.52 | 0.000 | 4 | 0.199 | 0.059 | 2359 | 3094 | 3750 |
342 | -1.85 | -168.5 | 38.4 | -18.2 | 49 | 350 | 0.00 | 1.88 | 0.00 | 0.000 | 6 | 0.000 | 0.039 | 2359 | 2012 | 3751 |
485 | -1.85 | -168.5 | 64.2 | -16.9 | 74 | 492 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 2359 | 2004 | 3752 |
830 | -1.85 | -168.5 | 120.7 | -16.0 | 135 | 837 | 0.00 | 1.98 | 0.00 | 0.000 | 4 | 0.000 | 0.063 | 2359 | 3089 | 3752 |
923 | -1.81 | -168.5 | 136.2 | -17.1 | 151 | 931 | 0.12 | 1.77 | 0.00 | 0.000 | 6 | 0.135 | 0.031 | 2382 | 2043 | 3752 |
1269 | -1.81 | -168.5 | 188.9 | -14.7 | 212 | 1276 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 2382 | 2035 | 3752 |
1615 | -1.81 | -168.5 | 240.3 | -14.8 | 273 | 1622 | 0.00 | 2.17 | 0.00 | 0.000 | 4 | 0.000 | 0.130 | 2381 | 3080 | 3752 |
1675 | -1.81 | -168.5 | 249.3 | -14.9 | 283 | 1682 | 0.00 | 1.90 | 0.00 | 0.000 | 6 | 0.000 | 0.077 | 2381 | 2049 | 3752 |
2020 | -1.81 | -168.5 | 301.0 | -14.8 | 344 | 2027 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 2381 | 2044 | 3752 |
2365 | -1.81 | -168.5 | 352.4 | -14.9 | 404 | 2369 | 0.00 | 1.88 | 0.00 | 0.000 | 4 | 0.000 | 0.048 | 2381 | 3094 | 3752 |
2437 | -1.81 | -168.5 | 363.6 | -15.7 | 410 | 2445 | 0.00 | 2.10 | 0.00 | 0.000 | 6 | 0.000 | 0.140 | 2381 | 2068 | 3752 |
2765 | -1.81 | -168.5 | 412.4 | -14.8 | 441 | 2769 | 0.00 | 1.88 | 0.00 | 0.000 | 4 | 0.000 | 0.066 | 2381 | 3087 | 3752 |
2800 | -1.81 | -168.5 | 418.0 | -15.5 | 444 | 2803 | 0.00 | 2.05 | 0.00 | 0.000 | 6 | 0.000 | 0.112 | 2382 | 2079 | 3752 |
3134 | -1.81 | -168.5 | 468.1 | -14.8 | 475 | 3137 | 0.00 | 1.85 | 0.00 | 0.000 | 4 | 0.000 | 0.058 | 2381 | 3091 | 3752 |
3161 | -1.81 | -168.5 | 472.9 | -15.1 | 477 | 3168 | 0.00 | 1.80 | 0.00 | 0.000 | 6 | 0.000 | 0.038 | 2381 | 2052 | 3752 |
3489 | -1.81 | -168.5 | 519.7 | -14.0 | 508 | 3493 | 0.00 | 1.88 | 0.00 | 0.000 | 4 | 0.000 | 0.051 | 2382 | 3087 | 3752 |
3527 | -1.81 | -168.5 | 525.6 | -14.2 | 511 | 3534 | 0.00 | 2.08 | 0.00 | 0.000 | 6 | 0.000 | 0.126 | 2381 | 2097 | 3752 |
3854 | -1.81 | -168.5 | 568.7 | -13.4 | 542 | 3855 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 2382 | 2094 | 3751 |
4179 | -1.81 | -168.5 | 612.2 | -13.5 | 569 | 4183 | 0.00 | 1.80 | 0.00 | 0.000 | 4 | 0.000 | 0.061 | 2381 | 3084 | 3751 |
4229 | -1.81 | -168.5 | 619.5 | -13.7 | 571 | 4233 | 0.00 | 1.75 | 0.00 | 0.000 | 6 | 0.000 | 0.044 | 2382 | 2097 | 3751 |
4557 | -1.81 | -168.5 | 664.7 | -14.3 | 587 | 4561 | 0.00 | 1.83 | 0.00 | 0.000 | 4 | 0.000 | 0.064 | 2381 | 3087 | 3750 |
4608 | -1.81 | -168.5 | 672.5 | -15.1 | 589 | 4611 | 0.00 | 1.77 | 0.00 | 0.000 | 6 | 0.000 | 0.050 | 2382 | 2094 | 3750 |
4935 | -1.81 | -168.5 | 722.0 | -15.3 | 605 | 4939 | 0.00 | 1.83 | 0.00 | 0.000 | 4 | 0.000 | 0.063 | 2382 | 3075 | 3750 |
4982 | -1.81 | -168.5 | 729.3 | -16.1 | 607 | 4986 | 0.00 | 1.75 | 0.00 | 0.000 | 6 | 0.000 | 0.048 | 2382 | 2097 | 3750 |
5316 | -1.81 | -168.5 | 780.2 | -15.0 | 623 | 5317 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 2382 | 2094 | 3750 |
5624 | -1.81 | -168.5 | 826.4 | -14.4 | 638 | 5628 | 0.00 | 1.80 | 0.00 | 0.000 | 4 | 0.000 | 0.063 | 2382 | 3083 | 3749 |
5693 | -1.81 | -168.5 | 836.6 | -15.2 | 641 | 5696 | 0.00 | 2.00 | 0.00 | 0.000 | 6 | 0.000 | 0.123 | 2381 | 2119 | 3749 |
6028 | -1.81 | -168.5 | 884.5 | -14.8 | 657 | 6032 | 0.00 | 1.77 | 0.00 | 0.000 | 4 | 0.000 | 0.062 | 2382 | 3091 | 3749 |
6106 | -1.81 | -168.5 | 897.1 | -15.4 | 660 | 6110 | 0.00 | 2.05 | 0.00 | 0.000 | 6 | 0.000 | 0.130 | 2381 | 2113 | 3748 |
6428 | -1.81 | -168.5 | 944.3 | -14.7 | 676 | 6429 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 2381 | 2112 | 3748 |
6738 | -1.81 | -168.5 | 987.8 | -13.4 | 691 | 6742 | 0.00 | 1.83 | 0.00 | 0.000 | 4 | 0.000 | 0.065 | 2382 | 3087 | 3747 |
6752 | end dive: TARGET_DEPTH_EXCEEDED | |||||||||||||||
state | 6752 | begin apogee | ||||||||||||||
6760 | -0.37 | 0.0 | 990.4 | 13.3 | 691 | 6914 | 1.52 | 0.00 | 149.65 | 1.275 | 6 | 0.127 | 0.000 | 2693 | 1985 | 3062 |
6915 | end apogee: CONTROL_FINISHED_OK | |||||||||||||||
state | 6915 | begin climb | ||||||||||||||
6917 | 1.91 | 168.5 | 995.6 | 0.0 | 699 | 7073 | 2.25 | 2.08 | 147.57 | 1.247 | 4 | 0.074 | 0.081 | 3193 | 925 | 2374 |
7126 | 1.85 | 168.5 | 972.6 | 16.2 | 708 | 7130 | 0.00 | 1.95 | 0.00 | 0.000 | 6 | 0.000 | 0.061 | 3194 | 1980 | 2372 |
7449 | 1.85 | 168.5 | 926.1 | 14.9 | 724 | 7450 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3194 | 1982 | 2369 |
7759 | 1.81 | 168.5 | 881.3 | 14.3 | 739 | 7762 | 0.00 | 1.92 | 0.00 | 0.000 | 4 | 0.000 | 0.063 | 3194 | 3044 | 2368 |
7798 | 1.76 | 168.5 | 875.2 | 14.5 | 740 | 7806 | 0.08 | 1.90 | 0.00 | 0.000 | 6 | 0.117 | 0.045 | 3168 | 1984 | 2368 |
8114 | 1.76 | 168.5 | 832.7 | 14.1 | 756 | 8115 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1980 | 2368 |
8423 | 1.76 | 168.5 | 789.8 | 13.4 | 771 | 8427 | 0.00 | 1.92 | 0.00 | 0.000 | 4 | 0.000 | 0.055 | 3168 | 3049 | 2367 |
8470 | 1.76 | 168.5 | 783.4 | 13.9 | 773 | 8473 | 0.00 | 1.90 | 0.00 | 0.000 | 6 | 0.000 | 0.041 | 3168 | 1989 | 2367 |
8803 | 1.76 | 168.5 | 738.0 | 13.4 | 789 | 8804 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1985 | 2367 |
9112 | 1.76 | 168.5 | 698.3 | 12.8 | 804 | 9113 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1985 | 2367 |
9422 | 1.76 | 168.5 | 657.8 | 13.2 | 819 | 9423 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1985 | 2366 |
9732 | 1.76 | 168.5 | 615.3 | 13.5 | 834 | 9735 | 0.00 | 1.90 | 0.00 | 0.000 | 4 | 0.000 | 0.054 | 3167 | 3048 | 2366 |
9778 | 1.76 | 168.5 | 608.7 | 13.9 | 836 | 9782 | 0.00 | 2.12 | 0.00 | 0.000 | 6 | 0.000 | 0.109 | 3168 | 1998 | 2366 |
10104 | 1.76 | 168.5 | 565.6 | 13.6 | 863 | 10111 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1994 | 2366 |
10430 | 1.76 | 168.5 | 522.7 | 13.4 | 894 | 10431 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1994 | 2366 |
10748 | 1.76 | 168.5 | 479.2 | 13.8 | 924 | 10749 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1993 | 2366 |
11067 | 1.76 | 168.5 | 436.4 | 13.2 | 954 | 11071 | 0.00 | 1.88 | 0.00 | 0.000 | 4 | 0.000 | 0.050 | 3168 | 3046 | 2365 |
11117 | 1.76 | 168.5 | 429.3 | 13.1 | 958 | 11125 | 0.00 | 2.08 | 0.00 | 0.000 | 6 | 0.000 | 0.101 | 3168 | 1972 | 2365 |
11446 | 1.76 | 168.5 | 387.0 | 13.6 | 989 | 11452 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1969 | 2366 |
11775 | 1.76 | 168.5 | 343.5 | 13.6 | 1024 | 11782 | 0.00 | 1.95 | 0.00 | 0.000 | 4 | 0.000 | 0.060 | 3168 | 3042 | 2366 |
11818 | 1.76 | 168.5 | 337.7 | 13.1 | 1031 | 11825 | 0.00 | 1.83 | 0.00 | 0.000 | 6 | 0.000 | 0.036 | 3168 | 1986 | 2365 |
12163 | 1.76 | 168.5 | 294.6 | 12.3 | 1092 | 12170 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1982 | 2366 |
12510 | 1.76 | 168.5 | 254.1 | 11.7 | 1153 | 12516 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1982 | 2366 |
12854 | 1.76 | 168.5 | 213.4 | 11.7 | 1214 | 12861 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1982 | 2367 |
13201 | 1.76 | 168.5 | 171.3 | 12.5 | 1275 | 13207 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1982 | 2366 |
13543 | 1.76 | 168.5 | 128.3 | 12.7 | 1336 | 13550 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1982 | 2367 |
13889 | 1.76 | 168.5 | 84.6 | 12.0 | 1397 | 13895 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1982 | 2367 |
14234 | 1.76 | 168.5 | 42.7 | 13.1 | 1458 | 14241 | 0.00 | 1.92 | 0.00 | 0.000 | 4 | 0.000 | 0.058 | 3168 | 3044 | 2367 |
14300 | 1.76 | 168.5 | 33.1 | 15.0 | 1469 | 14308 | 0.00 | 1.83 | 0.00 | 0.000 | 6 | 0.000 | 0.039 | 3168 | 2001 | 2367 |
14441 | 1.76 | 168.5 | 15.4 | 12.0 | 1494 | 14448 | 0.00 | 0.00 | 0.00 | 0.000 | 6 | 0.000 | 0.000 | 3168 | 1999 | 2367 |
14552 | end climb: SURFACE_DEPTH_REACHED | |||||||||||||||
state | 14552 | begin surface coast | ||||||||||||||
14580 | end surface coast: CONTROL_FINISHED_OK | |||||||||||||||
state | 14580 | begin surface |