PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/12-08:58:10
G10     241.9          18.3                4.7 +/-    2.18      10.9 +/-    2.18  0.080 / 0.310
G13     65.8           35.3                4.3 +/-    1.51       6.8 +/-    1.51  0.070 / 0.400
G15     106.6          56.2                6.5 +/-    0.76       7.7 +/-    0.76  0.040 / 0.040
G16     307.1          14.3                1.3 +/-    3.37       3.2 +/-    3.37  0.060 / 0.040
G20     22.9           66.5                2.5 +/-    0.80       2.7 +/-    0.80  0.050 / 0.040
G21     322.7          53.6                2.9 +/-    0.53       3.5 +/-    0.53  0.040 / 0.040
G26     278.2          19.2                4.6 +/-    1.29      10.2 +/-    1.29  0.060 / 0.100
G29     160.4          61.6                6.1 +/-    0.40       6.8 +/-    0.40  0.090 / 0.080