PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-05:28:10
G10     261.9          34.9                7.5 +/-    0.95      12.0 +/-    0.95  0.110 / 0.320
G13     44.6           22.2                3.6 +/-    1.32       7.6 +/-    1.32  0.110 / 0.310
G15     65.0           52.1                5.1 +/-    0.43       6.2 +/-    0.43  0.170 / 0.320
G16     282.9          13.6                5.5 +/-    1.69      14.1 +/-    1.69  0.130 / 0.370
G20     337.5          69.3                5.1 +/-    0.79       5.4 +/-    0.79  0.170 / 0.320
G21     351.4          68.5                2.8 +/-    0.94       3.0 +/-    0.94  0.090 / 0.210
G24     124.1          11.3                3.2 +/-   14.02       8.7 +/-   14.02  0.080 / 0.100
G26     255.5          10.1                5.1 +/-    1.72      14.1 +/-    1.72  0.090 / 0.100
G27     320.4          15.3                2.3 +/-    2.02       5.6 +/-    2.02  0.050 / 0.050
G29     167.6          36.9                6.2 +/-    1.10       9.5 +/-    1.10  0.050 / 0.040