PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/30-10:27:50
G01     126.4          12.1                3.7 +/-    3.24       9.8 +/-    3.24  0.030 / 0.040
G07     55.8           69.3                3.3 +/-    0.45       3.5 +/-    0.45  0.030 / 0.040
G08     48.6           36.6                1.6 +/-    1.03       2.4 +/-    1.03  0.020 / 0.030
G09     175.9          32.6                4.4 +/-    0.82       7.3 +/-    0.82  0.030 / 0.040
G11     115.5          35.9                5.3 +/-    1.17       8.3 +/-    1.17  0.080 / 0.320
G13     320.8          12.6                0.6 +/-    1.07       1.6 +/-    1.07  0.090 / 0.410
G17     199.2          17.4                3.7 +/-    0.72       8.6 +/-    0.72  0.110 / 0.310
G18     102.2          17.0                4.7 +/-    1.28      11.1 +/-    1.28  0.090 / 0.350
G28     277.0          53.1                3.9 +/-    0.69       4.7 +/-    0.69  0.120 / 0.320
G30     331.2          59.6                2.2 +/-    0.76       2.5 +/-    0.76  0.120 / 0.280