PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/08-11:58:10
G01     126.0          12.4                4.1 +/-    2.82      10.9 +/-    2.82  0.040 / 0.040
G07     56.8           69.3                4.3 +/-    0.39       4.6 +/-    0.39  0.040 / 0.030
G08     48.8           37.1                4.1 +/-    1.20       6.3 +/-    1.20  0.020 / 0.030
G09     176.3          32.7                4.6 +/-    1.35       7.7 +/-    1.35  0.030 / 0.030
G11     115.7          36.1                5.9 +/-    1.00       9.2 +/-    1.00  0.220 / 0.270
G13     320.7          12.9                2.0 +/-    3.41       5.2 +/-    3.41  0.210 / 0.330
G17     199.7          17.0                3.7 +/-    2.19       8.8 +/-    2.19  0.130 / 0.340
G18     102.1          17.2                4.3 +/-    1.56      10.0 +/-    1.56  0.080 / 0.400
G28     277.9          53.4                4.1 +/-    3.46       5.0 +/-    3.46  0.110 / 0.230
G30     332.5          60.4                2.9 +/-    0.60       3.3 +/-    0.60  0.100 / 0.190