PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/06-06:42:50
G01     44.6           20.8                3.6 +/-    3.13       7.7 +/-    3.13  0.090 / 0.210
G06     176.8          31.6                7.1 +/-    1.38      12.0 +/-    1.38  0.080 / 0.200
G13     242.6          26.3                6.2 +/-    2.29      11.7 +/-    2.29  0.170 / 0.180
G15     278.4          13.7                2.7 +/-    1.94       6.8 +/-    1.94  0.100 / 0.170
G17     355.6          73.7                6.6 +/-    0.54       6.8 +/-    0.54  0.050 / 0.070
G19     257.7          63.2                6.5 +/-    0.73       7.2 +/-    0.73  0.060 / 0.080
G24     316.8          18.3                3.5 +/-    2.69       8.1 +/-    2.69  0.020 / 0.020
G28     60.8           51.2                6.7 +/-    0.96       8.3 +/-    0.96  0.030 / 0.020
G30     153.2          35.3                7.8 +/-    0.73      12.3 +/-    0.73  0.040 / 0.050