PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/09-08:57:40
G01     60.4           30.0                4.7 +/-    1.39       8.2 +/-    1.39  0.030 / 0.060
G06     179.3          13.7                2.2 +/-   18.67       5.7 +/-   18.67  0.040 / 0.060
G07     140.9          22.9                6.0 +/-    1.89      12.3 +/-    1.89  0.110 / 0.140
G11     49.6           27.5                2.5 +/-    1.61       4.6 +/-    1.61  0.070 / 0.130
G13     263.3          36.9                6.9 +/-    1.88      10.7 +/-    1.88  0.090 / 0.110
G15     295.0          16.4                4.4 +/-    1.84      10.6 +/-    1.84  0.080 / 0.130
G17     248.2          74.2                6.9 +/-    0.45       7.2 +/-    0.45  0.100 / 0.310
G19     229.9          51.3                8.5 +/-    3.58      10.5 +/-    3.58  0.140 / 0.330
G28     18.5           60.3                2.5 +/-    0.96       2.8 +/-    0.96  0.040 / 0.060
G30     143.1          56.8                7.9 +/-    0.72       9.2 +/-    0.72  0.040 / 0.070