File: 253_MERSI_TOTAL_LW.MAT 30 Variables, 137 Data Points FhdS 1: MOBY253 MERSI Total-Band Averaged Data File FhdS 2: Water-Leaving Radiance, Lw7, is calculated from LuMid and Kl3(LuMid-LuBot) FhdS 3: FhdS 4: DATA INCLUDED: Good and Questionable Data FhdS 5: PROCESSING: Oct 2016 FhdS 6: All data are STRAY LIGHT CORRECTED with version 6 FhdS 7: DATE CREATED: 06-Jul-2019 02:17:15 FhdS 8: ##Oct 2016 reprocessing applied on 06-Jul-2019 02:17:15 ------------------------------------------- ##0.234 meters added to the MOBY arm depths ##Lu RSG data shifted right by one pixel DscS 1: Year DscS 2: Julian Day DscS 3: GMT Time (HH.hh) DscS 4: Observation Date (YYMMDD.HHMMmm) DscS 5: MOBY deployment DscS 6: Latitide (DD.MMmm) (+N/-S) DscS 7: Longitide (DD.MMmm) (-W/+E) DscS 8: Data Status (1 = Good and 2 = Questionable) DscS 9: MERSI Water Leaving Radiance Band 1 470 nm (µW/cm²/sr/nm) DscS 10: MERSI Water Leaving Radiance Band 2 550 nm (µW/cm²/sr/nm) DscS 11: MERSI Water Leaving Radiance Band 3 650 nm (µW/cm²/sr/nm) DscS 12: MERSI Water Leaving Radiance Band 8 412 nm (µW/cm²/sr/nm) DscS 13: MERSI Water Leaving Radiance Band 9 443 nm (µW/cm²/sr/nm) DscS 14: MERSI Water Leaving Radiance Band 10 490 nm (µW/cm²/sr/nm) DscS 15: MERSI Water Leaving Radiance Band 11 520 nm (µW/cm²/sr/nm) DscS 16: MERSI Water Leaving Radiance Band 12 565 nm (µW/cm²/sr/nm) DscS 17: MERSI Water Leaving Radiance Band 13 650 nm (µW/cm²/sr/nm) DscS 18: MERSI Water Leaving Radiance Band 14 685 nm (µW/cm²/sr/nm) DscS 19: MERSI Surface Irradiance Band 1 470 nm (µW/cm²/nm) DscS 20: MERSI Surface Irradiance Band 2 550 nm (µW/cm²/nm) DscS 21: MERSI Surface Irradiance Band 3 650 nm (µW/cm²/nm) DscS 22: MERSI Surface Irradiance Band 4 865 nm (µW/cm²/nm) DscS 23: MERSI Surface Irradiance Band 8 412 nm (µW/cm²/nm) DscS 24: MERSI Surface Irradiance Band 9 443 nm (µW/cm²/nm) DscS 25: MERSI Surface Irradiance Band 10 490 nm (µW/cm²/nm) DscS 26: MERSI Surface Irradiance Band 11 520 nm (µW/cm²/nm) DscS 27: MERSI Surface Irradiance Band 12 565 nm (µW/cm²/nm) DscS 28: MERSI Surface Irradiance Band 13 650 nm (µW/cm²/nm) DscS 29: MERSI Surface Irradiance Band 14 685 nm (µW/cm²/nm) DscS 30: MERSI Surface Irradiance Band 15 765 nm (µW/cm²/nm) Xdat: Year, JDay, GMTTime, ObsDate,Deploy, Lat, Long, ?Data, LwB1, LwB2, LwB3, LwB8, LwB9, LwB10, LwB11, LwB12, LwB13, LwB14, EsB1, EsB2, EsB3, EsB4, EsB8, EsB9, EsB10, EsB11, EsB12, EsB13, EsB14, EsB15 2013, 259, 22.5090,130916.2231, 253, 20.4914, -157.1200, 1, 1.3936, 0.2405, 0.0083, 2.0097, 1.6699, 1.1044, 0.3782, 0.1558, 0.0092, 0.0036, 179.9, 169.4, 147.5, 93.6, 148.9, 168.2, 179.2, 170.2, 165.5, 146.3, 135.6, 102.7 2013, 262, 22.5095,130919.2231, 253, 20.4864, -157.1130, 2, 1.3564, 0.2493, 0.0094, 1.9128, 1.6107, 1.0818, 0.3865, 0.1638, 0.0104, 0.0042, 173.3, 162.7, 141.3, 89.3, 143.7, 162.1, 172.4, 163.6, 158.9, 140.0, 129.9, 98.5 2013, 265, 22.5093,130922.2231, 253, 20.4860, -157.1106, 1, 1.3135, 0.2549, 0.0098, 1.7851, 1.5266, 1.0656, 0.3947, 0.1675, 0.0109, 0.0043, 173.1, 162.7, 141.5, 89.4, 143.3, 161.9, 172.4, 163.7, 158.9, 140.2, 130.0, 98.6 2013, 266, 22.5093,130923.2231, 253, 20.4851, -157.1130, 1, 1.2768, 0.2508, 0.0096, 1.7137, 1.4776, 1.0378, 0.3866, 0.1654, 0.0107, 0.0042, 168.1, 158.3, 138.0, 87.5, 138.9, 157.1, 167.5, 159.1, 154.6, 136.8, 126.9, 96.2 2013, 268, 22.5098,130925.2231, 253, 20.4863, -157.1113, 1, 1.3654, 0.2542, 0.0096, 1.9340, 1.6149, 1.0938, 0.3943, 0.1668, 0.0106, 0.0043, 174.2, 163.6, 142.2, 89.8, 144.1, 162.9, 173.5, 164.7, 159.7, 140.7, 130.6, 99.1 2013, 273, 22.5220,130930.2231, 253, 20.4864, -157.1100, 1, 1.2353, 0.2595, 0.0105, 1.6262, 1.4071, 1.0170, 0.3957, 0.1730, 0.0116, 0.0046, 170.3, 160.3, 139.6, 88.3, 140.3, 159.0, 169.7, 161.3, 156.6, 138.2, 128.3, 97.3 2013, 274, 22.5098,131001.2231, 253, 20.4845, -157.1159, 1, 1.0917, 0.2528, 0.0105, 1.3230, 1.1991, 0.9244, 0.3789, 0.1705, 0.0116, 0.0047, 166.1, 156.5, 136.2, 86.0, 136.8, 155.1, 165.6, 157.4, 152.8, 134.7, 125.1, 95.0 2013, 275, 22.5167,131002.2231, 253, 20.4847, -157.1140, 1, 1.1619, 0.2474, 0.0099, 1.4809, 1.3080, 0.9649, 0.3773, 0.1645, 0.0109, 0.0046, 169.3, 159.6, 138.9, 87.7, 139.4, 158.0, 168.8, 160.5, 155.8, 137.3, 127.5, 96.9 2013, 277, 22.4927,131004.2230, 253, 20.4863, -157.1103, 1, 1.0147, 0.2772, 0.0121, 1.2319, 1.0725, 0.8866, 0.4080, 0.1896, 0.0133, 0.0059, 171.6, 161.9, 141.0, 88.7, 140.9, 160.0, 171.1, 162.8, 158.1, 139.7, 129.4, 97.8 2013, 278, 22.5168,131005.2231, 253, 20.4847, -157.1139, 1, 1.1116, 0.2513, 0.0102, 1.4476, 1.2358, 0.9326, 0.3804, 0.1683, 0.0114, 0.0046, 163.3, 153.7, 133.7, 84.6, 134.8, 152.6, 162.7, 154.6, 150.1, 132.5, 122.9, 93.1 2013, 280, 22.5170,131007.2231, 253, 20.4842, -157.1127, 1, 1.2039, 0.2539, 0.0100, 1.5911, 1.3684, 0.9915, 0.3865, 0.1694, 0.0111, 0.0043, 163.1, 153.6, 133.9, 84.7, 134.1, 152.2, 162.6, 154.5, 150.0, 132.5, 123.0, 93.1 2013, 282, 22.5170,131009.2231, 253, 20.4865, -157.1093, 1, 1.1783, 0.2447, 0.0098, 1.5729, 1.3478, 0.9694, 0.3744, 0.1626, 0.0108, 0.0043, 154.0, 144.7, 126.2, 80.0, 127.3, 144.0, 153.4, 145.6, 141.3, 125.1, 116.0, 87.7 2013, 283, 22.9338,131010.2256, 253, 20.4859, -157.1098, 1, 1.1566, 0.2440, 0.0098, 1.5129, 1.3160, 0.9547, 0.3720, 0.1625, 0.0109, 0.0043, 153.1, 143.9, 125.0, 79.2, 126.3, 143.1, 152.6, 144.8, 140.4, 123.7, 114.8, 87.1 2013, 284, 22.5172,131011.2231, 253, 20.4877, -157.1090, 1, 1.3144, 0.2436, 0.0093, 1.8128, 1.5491, 1.0535, 0.3773, 0.1604, 0.0104, 0.0040, 157.5, 148.1, 129.4, 82.0, 129.9, 147.2, 156.9, 149.0, 144.6, 128.1, 118.9, 90.2 2013, 285, 22.5172,131012.2231, 253, 20.4882, -157.1095, 2, 1.2020, 0.2203, 0.0080, 1.6651, 1.4217, 0.9608, 0.3418, 0.1447, 0.0089, 0.0034, 142.6, 133.4, 115.9, 73.3, 118.3, 133.5, 141.9, 134.4, 130.1, 114.6, 106.2, 80.4 2013, 286, 22.5173,131013.2231, 253, 20.4902, -157.1089, 1, 1.2547, 0.2483, 0.0096, 1.7200, 1.4579, 1.0183, 0.3813, 0.1646, 0.0107, 0.0044, 155.0, 145.7, 127.1, 80.4, 128.0, 144.8, 154.4, 146.6, 142.2, 125.7, 116.7, 88.6 2013, 287, 22.5175,131014.2231, 253, 20.4926, -157.1094, 2, 1.2194, 0.2635, 0.0105, 1.6175, 1.3882, 1.0070, 0.3983, 0.1769, 0.0116, 0.0047, 164.5, 155.1, 135.4, 85.8, 135.1, 153.4, 164.0, 156.0, 151.4, 133.9, 124.3, 94.3 2013, 288, 22.5352,131015.2232, 253, 20.4863, -157.1120, 1, 1.1687, 0.2481, 0.0097, 1.5511, 1.3322, 0.9627, 0.3769, 0.1658, 0.0107, 0.0044, 153.3, 144.2, 125.9, 79.7, 126.4, 143.2, 152.8, 145.1, 140.8, 124.6, 115.6, 87.7 2013, 289, 22.5175,131016.2231, 253, 20.4872, -157.1097, 1, 1.1812, 0.2496, 0.0100, 1.6057, 1.3537, 0.9688, 0.3796, 0.1668, 0.0111, 0.0044, 152.0, 143.0, 124.9, 79.3, 125.4, 142.0, 151.4, 143.8, 139.6, 123.8, 114.8, 86.8 2013, 291, 22.5228,131018.2231, 253, 20.4860, -157.1100, 1, 1.1278, 0.2406, 0.0093, 1.5113, 1.2872, 0.9269, 0.3662, 0.1605, 0.0102, 0.0042, 150.4, 141.7, 123.8, 78.5, 123.8, 140.4, 149.9, 142.5, 138.4, 122.5, 113.7, 86.3 2013, 292, 22.5357,131019.2232, 253, 20.4867, -157.1093, 1, 1.1616, 0.2372, 0.0094, 1.6004, 1.3438, 0.9470, 0.3622, 0.1577, 0.0105, 0.0042, 150.1, 141.3, 123.9, 78.9, 123.6, 140.2, 149.5, 142.1, 138.0, 123.0, 114.0, 86.0 2013, 294, 22.5182,131021.2231, 253, 20.4869, -157.1107, 1, 1.1839, 0.2414, 0.0090, 1.6381, 1.3695, 0.9635, 0.3686, 0.1604, 0.0099, 0.0040, 152.2, 143.8, 126.2, 80.5, 124.8, 141.9, 151.8, 144.5, 140.5, 125.4, 116.1, 87.6 2013, 298, 22.5360,131025.2232, 253, 20.4939, -157.1113, 1, 1.0749, 0.2253, 0.0084, 1.3638, 1.2188, 0.8874, 0.3428, 0.1501, 0.0092, 0.0039, 145.4, 137.2, 119.3, 76.2, 119.3, 135.7, 145.0, 137.9, 134.0, 118.1, 109.7, 83.3 2013, 299, 22.5183,131026.2231, 253, 20.4948, -157.1161, 1, 1.0256, 0.2276, 0.0081, 1.3334, 1.1536, 0.8550, 0.3449, 0.1521, 0.0089, 0.0038, 150.9, 142.9, 125.4, 79.9, 123.2, 140.4, 150.7, 143.6, 139.6, 123.9, 115.2, 87.6 2013, 300, 22.5187,131027.2231, 253, 20.4915, -157.1177, 2, 1.0412, 0.2329, 0.0086, 1.3297, 1.1612, 0.8745, 0.3527, 0.1555, 0.0094, 0.0041, 150.8, 143.1, 125.8, 80.4, 122.9, 140.3, 150.7, 143.7, 139.9, 124.3, 115.6, 88.0 2013, 304, 22.5187,131031.2231, 253, 20.4887, -157.1196, 1, 1.0363, 0.2250, 0.0084, 1.3288, 1.1678, 0.8623, 0.3426, 0.1498, 0.0093, 0.0039, 151.5, 143.1, 125.6, 79.8, 123.7, 141.1, 151.2, 143.9, 139.8, 124.2, 115.3, 87.4 2013, 305, 22.8528,131101.2251, 253, 20.4880, -157.1204, 1, 1.0356, 0.2221, 0.0078, 1.3326, 1.1698, 0.8614, 0.3385, 0.1476, 0.0087, 0.0036, 151.2, 143.0, 125.5, 80.0, 123.2, 140.7, 150.9, 143.8, 139.7, 124.4, 115.4, 87.0 2013, 308, 22.5188,131104.2231, 253, 20.4882, -157.1205, 1, 0.9428, 0.2161, 0.0082, 1.1397, 1.0448, 0.7934, 0.3252, 0.1455, 0.0090, 0.0039, 149.7, 141.8, 125.0, 79.8, 122.0, 139.3, 149.5, 142.5, 138.6, 124.0, 114.9, 86.6 2013, 309, 22.5367,131105.2232, 253, 20.4895, -157.1210, 1, 0.9726, 0.2182, 0.0083, 1.1926, 1.0868, 0.8139, 0.3297, 0.1462, 0.0092, 0.0036, 152.2, 144.3, 127.0, 80.7, 123.8, 141.5, 152.1, 145.0, 141.0, 125.7, 116.7, 88.2 2013, 310, 22.5367,131106.2232, 253, 20.4903, -157.1207, 2, 0.9763, 0.2264, 0.0085, 1.2024, 1.0816, 0.8238, 0.3411, 0.1519, 0.0094, 0.0040, 152.3, 144.8, 127.8, 81.7, 123.4, 141.4, 152.3, 145.3, 141.5, 126.7, 117.5, 88.6 2013, 321, 22.5193,131117.2231, 253, 20.4938, -157.1176, 1, 0.9863, 0.2044, 0.0072, 1.2630, 1.1167, 0.8154, 0.3130, 0.1355, 0.0080, 0.0033, 138.2, 130.9, 115.6, 74.1, 112.7, 128.6, 138.0, 131.5, 127.9, 114.6, 106.3, 80.2 2013, 322, 22.5193,131118.2231, 253, 20.4926, -157.1194, 2, 0.9860, 0.1990, 0.0069, 1.2953, 1.1317, 0.8071, 0.3056, 0.1314, 0.0076, 0.0031, 142.2, 135.0, 119.4, 76.6, 115.5, 132.1, 142.2, 135.6, 131.9, 118.4, 109.9, 82.9 2013, 323, 22.5193,131119.2231, 253, 20.4905, -157.1205, 1, 0.9802, 0.1997, 0.0070, 1.2731, 1.1207, 0.8050, 0.3061, 0.1324, 0.0078, 0.0031, 139.1, 132.4, 117.2, 75.4, 112.7, 129.1, 139.1, 132.8, 129.4, 116.2, 107.9, 81.4 2013, 326, 22.5170,131122.2231, 253, 20.4909, -157.1152, 1, 0.9350, 0.1943, 0.0068, 1.1924, 1.0551, 0.7741, 0.2981, 0.1285, 0.0074, 0.0032, 134.5, 127.1, 111.5, 71.1, 109.2, 125.0, 134.4, 127.8, 124.0, 110.4, 102.5, 77.3 2013, 328, 22.5197,131124.2231, 253, 20.4924, -157.1191, 1, 0.9964, 0.2072, 0.0073, 1.2819, 1.1304, 0.8224, 0.3167, 0.1374, 0.0081, 0.0033, 138.2, 131.1, 116.0, 74.4, 112.2, 128.4, 138.1, 131.7, 128.1, 115.3, 106.7, 79.9 2013, 329, 22.5373,131125.2232, 253, 20.4932, -157.1198, 1, 0.9380, 0.1959, 0.0067, 1.1861, 1.0605, 0.7762, 0.3003, 0.1294, 0.0074, 0.0030, 141.0, 134.1, 118.7, 76.0, 114.0, 130.8, 141.0, 134.6, 131.1, 117.8, 109.1, 82.0 2013, 330, 22.5377,131126.2232, 253, 20.4926, -157.1203, 1, 1.0015, 0.2066, 0.0070, 1.2736, 1.1328, 0.8282, 0.3176, 0.1361, 0.0077, 0.0032, 141.0, 134.1, 118.6, 75.8, 114.2, 130.9, 141.0, 134.6, 131.0, 117.7, 109.0, 81.8 2013, 332, 22.5200,131128.2231, 253, 20.4960, -157.1161, 2, 0.8472, 0.1688, 0.0047, 1.0556, 0.9460, 0.7065, 0.2641, 0.1084, 0.0051, 0.0023, 132.7, 125.7, 111.2, 71.1, 107.8, 123.4, 132.6, 126.3, 122.8, 110.4, 102.2, 76.5 2013, 337, 22.5207,131203.2231, 253, 20.4898, -157.1115, 1, 0.8873, 0.1863, 0.0065, 1.1465, 0.9982, 0.7375, 0.2851, 0.1233, 0.0071, 0.0032, 121.6, 114.9, 101.1, 64.5, 99.4, 113.3, 121.4, 115.5, 112.1, 100.3, 92.9, 69.7 2013, 338, 22.5207,131204.2231, 253, 20.4895, -157.1111, 2, 0.9047, 0.1867, 0.0066, 1.1741, 1.0260, 0.7473, 0.2865, 0.1234, 0.0073, 0.0030, 138.7, 131.5, 116.0, 74.1, 112.4, 128.8, 138.7, 132.2, 128.3, 115.0, 106.6, 80.2 2013, 339, 22.5380,131205.2232, 253, 20.4899, -157.1098, 1, 0.8992, 0.1811, 0.0063, 1.1538, 1.0252, 0.7385, 0.2787, 0.1197, 0.0070, 0.0030, 122.3, 115.5, 102.2, 65.5, 99.8, 113.9, 122.2, 116.2, 112.7, 101.3, 93.9, 70.7 2013, 340, 22.5505,131206.2233, 253, 20.4932, -157.1130, 1, 0.9081, 0.1860, 0.0053, 1.1679, 1.0291, 0.7506, 0.2861, 0.1222, 0.0058, 0.0025, 125.1, 118.0, 104.2, 66.6, 102.0, 116.5, 124.9, 118.8, 115.1, 103.2, 95.7, 72.0 2013, 341, 22.5205,131207.2231, 253, 20.4948, -157.1136, 1, 0.8828, 0.1922, 0.0070, 1.1410, 0.9876, 0.7371, 0.2917, 0.1283, 0.0077, 0.0034, 119.9, 113.1, 99.7, 63.6, 98.0, 111.7, 119.7, 113.8, 110.3, 98.8, 91.6, 68.9 2013, 343, 22.5207,131209.2231, 253, 20.4953, -157.1109, 1, 0.9501, 0.2203, 0.0081, 1.1999, 1.0534, 0.8011, 0.3312, 0.1480, 0.0090, 0.0036, 140.8, 134.3, 118.7, 75.7, 113.4, 130.4, 141.0, 134.8, 131.2, 117.1, 109.0, 82.5 2013, 350, 22.5333,131216.2232, 253, 20.4844, -157.1119, 1, 0.8445, 0.1838, 0.0067, 1.0453, 0.9425, 0.7052, 0.2796, 0.1224, 0.0073, 0.0032, 121.0, 114.2, 100.8, 64.1, 98.7, 112.6, 120.8, 115.0, 111.4, 99.8, 92.5, 69.6 2013, 351, 22.5212,131217.2231, 253, 20.4842, -157.1129, 1, 0.8360, 0.1859, 0.0068, 1.0134, 0.9148, 0.7073, 0.2835, 0.1235, 0.0074, 0.0033, 122.0, 115.6, 102.3, 65.5, 99.3, 113.5, 121.9, 116.1, 112.8, 101.7, 94.1, 70.4 2013, 353, 22.5335,131219.2232, 253, 20.4863, -157.1090, 2, 0.8378, 0.1771, 0.0065, 1.0779, 0.9461, 0.6951, 0.2706, 0.1176, 0.0071, 0.0031, 117.3, 110.6, 97.5, 62.1, 95.9, 109.3, 117.1, 111.4, 107.9, 96.4, 89.5, 67.4 2013, 354, 22.5213,131220.2231, 253, 20.4881, -157.1084, 1, 0.8609, 0.1860, 0.0067, 1.0607, 0.9630, 0.7181, 0.2832, 0.1239, 0.0075, 0.0031, 118.7, 111.9, 98.5, 62.6, 97.0, 110.5, 118.4, 112.6, 109.2, 97.5, 90.4, 68.0 2013, 355, 22.5213,131221.2231, 253, 20.4894, -157.1089, 1, 0.8307, 0.1842, 0.0066, 1.0389, 0.9227, 0.6980, 0.2802, 0.1227, 0.0072, 0.0033, 119.6, 113.2, 100.0, 63.7, 97.3, 111.2, 119.6, 113.9, 110.4, 98.8, 91.8, 69.3 2013, 356, 22.5215,131222.2231, 253, 20.4860, -157.1138, 1, 0.8664, 0.1866, 0.0065, 1.0819, 0.9731, 0.7217, 0.2851, 0.1239, 0.0072, 0.0030, 133.9, 126.6, 111.5, 70.9, 108.1, 124.3, 134.0, 127.5, 123.5, 110.2, 102.4, 77.1 2013, 360, 22.5357,131226.2232, 253, 20.4931, -157.1203, 2, 0.8568, 0.1862, 0.0062, 1.0357, 0.9514, 0.7205, 0.2862, 0.1225, 0.0068, 0.0029, 136.4, 129.8, 115.2, 73.8, 110.1, 126.5, 136.5, 130.4, 126.8, 114.4, 106.0, 79.4 2013, 361, 22.5393,131227.2232, 253, 20.4933, -157.1204, 1, 0.9383, 0.1968, 0.0066, 1.1374, 1.0500, 0.7818, 0.3028, 0.1296, 0.0072, 0.0031, 137.9, 131.2, 116.1, 74.0, 111.2, 127.8, 138.0, 131.8, 128.2, 115.0, 106.6, 80.1 2013, 365, 22.5222,131231.2231, 253, 20.4923, -157.1183, 1, 0.8848, 0.1815, 0.0061, 1.1135, 0.9989, 0.7328, 0.2792, 0.1197, 0.0067, 0.0028, 127.2, 121.2, 107.6, 68.9, 102.7, 117.9, 127.3, 121.6, 118.5, 106.5, 98.8, 74.4 2014, 1, 22.5222,140101.2231, 253, 20.4929, -157.1152, 1, 0.9010, 0.1891, 0.0066, 1.1433, 1.0171, 0.7474, 0.2892, 0.1254, 0.0073, 0.0031, 130.5, 124.5, 110.6, 70.9, 105.5, 121.0, 130.7, 124.9, 121.7, 109.5, 101.6, 76.6 2014, 4, 22.5223,140104.2231, 253, 20.4890, -157.1212, 1, 0.8922, 0.1857, 0.0065, 1.1134, 1.0019, 0.7415, 0.2853, 0.1224, 0.0071, 0.0031, 139.2, 132.5, 117.5, 75.3, 112.4, 129.1, 139.3, 133.0, 129.5, 116.8, 108.1, 80.8 2014, 5, 22.5225,140105.2231, 253, 20.4926, -157.1197, 1, 0.8827, 0.1863, 0.0062, 1.0927, 0.9858, 0.7371, 0.2868, 0.1226, 0.0068, 0.0030, 139.3, 132.5, 117.9, 75.8, 112.5, 129.2, 139.4, 133.0, 129.4, 117.3, 108.6, 81.1