PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-11:58:00
G10     265.6          36.9                4.8 +/-    1.82       7.4 +/-    1.82  0.110 / 0.170
G13     42.8           20.0                3.5 +/-    1.95       7.8 +/-    1.95  0.180 / 0.130
G15     59.2           48.2                4.7 +/-    0.64       6.0 +/-    0.64  0.070 / 0.080
G16     281.8          12.0                4.7 +/-    1.64      12.4 +/-    1.64  0.050 / 0.080
G20     50.6           40.7                2.9 +/-    1.01       4.1 +/-    1.01  0.040 / 0.030
G21     7.4            72.2                4.0 +/-    0.55       4.2 +/-    0.55  0.040 / 0.040
G24     122.1          13.3                5.3 +/-    2.55      13.7 +/-    2.55  0.160 / 0.450
G27     318.7          18.8                3.2 +/-    2.02       7.3 +/-    2.02  0.170 / 0.540
G29     167.1          30.7                5.3 +/-    1.11       9.2 +/-    1.11  0.190 / 0.300