PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-05:27:40
G10     269.1          39.3                6.3 +/-    1.21       9.3 +/-    1.21  0.040 / 0.040
G13     41.1           17.0                3.9 +/-    1.12       9.3 +/-    1.12  0.040 / 0.040
G15     57.1           47.3                4.8 +/-    0.54       6.3 +/-    0.54  0.250 / 0.360
G16     276.4          11.4                6.0 +/-    2.20      16.2 +/-    2.20  0.170 / 0.200
G20     349.8          67.9                4.3 +/-    0.36       4.7 +/-    0.36  0.160 / 0.260
G21     6.6            72.9                5.7 +/-    0.93       5.9 +/-    0.93  0.110 / 0.270
G24     118.4          15.4                5.9 +/-    1.36      14.5 +/-    1.36  0.270 / 0.230
G27     317.5          20.7                4.3 +/-    2.84       9.2 +/-    2.84  0.200 / 0.200
G29     168.4          29.6                6.2 +/-    0.92      10.9 +/-    0.92  0.040 / 0.040
G32     204.2          12.5                4.2 +/-    4.23      11.1 +/-    4.23  0.030 / 0.030