PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-10:57:50
G10     262.5          35.0                5.0 +/-    1.30       7.9 +/-    1.30  0.310 / 0.270
G13     44.4           22.2                3.2 +/-    1.82       6.7 +/-    1.82  0.200 / 0.250
G15     62.8           50.4                6.1 +/-    0.59       7.7 +/-    0.59  0.110 / 0.300
G16     284.3          13.0                4.6 +/-    1.78      12.1 +/-    1.78  0.120 / 0.300
G20     47.9           43.7                5.6 +/-    0.93       7.6 +/-    0.93  0.070 / 0.060
G21     358.4          70.2                5.0 +/-    0.39       5.3 +/-    0.39  0.050 / 0.060
G24     124.4          11.6                6.4 +/-    3.94      17.1 +/-    3.94  0.040 / 0.040
G27     319.9          16.4                2.2 +/-    3.28       5.2 +/-    3.28  0.040 / 0.040
G29     166.9          34.3                7.8 +/-    0.76      12.6 +/-    0.76  0.380 / 0.270