PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/24-09:42:50
G01     126.1          12.4                3.4 +/-    3.67       8.9 +/-    3.67  0.030 / 0.030
G07     60.8           68.1                4.5 +/-    0.72       4.8 +/-    0.72  0.030 / 0.040
G08     49.0           37.1                2.5 +/-    0.79       3.8 +/-    0.79  0.030 / 0.030
G09     176.6          33.5                6.4 +/-    2.00      10.5 +/-    2.00  0.030 / 0.040
G11     115.2          34.8                6.9 +/-    1.03      10.9 +/-    1.03  0.070 / 0.090
G13     321.6          10.6               -7.8 +/-   10.89     -21.5 +/-   10.89  0.060 / 0.080
G17     199.4          18.1                4.4 +/-    1.71      10.0 +/-    1.71  0.040 / 0.070
G28     278.7          53.7                5.6 +/-    1.03       6.7 +/-    1.03  0.040 / 0.080
G30     332.9          60.2                3.8 +/-    1.13       4.3 +/-    1.13  0.090 / 0.220