PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/08-02:57:30
G02     199.7          18.4                5.4 +/-    2.27      12.3 +/-    2.27  0.060 / 0.070
G06     176.1          47.0                6.7 +/-    0.97       8.8 +/-    0.97  0.080 / 0.070
G13     228.7          15.2                5.1 +/-    2.82      12.5 +/-    2.82  0.040 / 0.050
G17     21.9           60.2                4.9 +/-    0.63       5.5 +/-    0.63  0.040 / 0.040
G19     308.9          71.2                3.6 +/-    0.44       3.8 +/-    0.44  0.090 / 0.110
G24     310.2          30.0                4.2 +/-    1.08       7.4 +/-    1.08  0.110 / 0.100
G28     82.1           43.8                4.8 +/-    1.85       6.5 +/-    1.85  0.120 / 0.360
G30     156.9          17.8                5.3 +/-    1.50      12.4 +/-    1.50  0.230 / 0.450