PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-06:13:00
G01     39.0           13.1                1.1 +/-    0.67       2.9 +/-    0.67  0.070 / 0.140
G02     199.6          11.6                2.1 +/-   10.69       5.8 +/-   10.69  0.070 / 0.150
G06     175.1          42.3                7.4 +/-    1.12      10.4 +/-    1.12  0.050 / 0.080
G13     233.6          19.4                5.3 +/-    1.69      11.8 +/-    1.69  0.050 / 0.090
G15     268.4          10.5                2.2 +/-    3.87       6.0 +/-    3.87  0.060 / 0.090
G17     14.8           65.1                4.7 +/-    0.56       5.1 +/-    0.56  0.050 / 0.090
G19     284.9          69.3                6.1 +/-    0.43       6.5 +/-    0.43  0.080 / 0.310
G24     313.1          26.5                4.3 +/-    1.62       8.1 +/-    1.62  0.120 / 0.420
G28     75.0           46.4                4.9 +/-    0.83       6.5 +/-    0.83  0.070 / 0.160
G30     156.1          24.6                6.1 +/-    1.94      12.1 +/-    1.94  0.100 / 0.180