PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-13:57:40
G01     38.4           12.2                5.3 +/-    3.49      14.2 +/-    3.49  0.030 / 0.020
G06     172.5          43.9                7.8 +/-    0.93      10.7 +/-    0.93  0.030 / 0.020
G13     233.0          19.8                8.1 +/-    1.59      17.9 +/-    1.59  0.110 / 0.230
G17     0.0            69.8                5.7 +/-    0.82       6.1 +/-    0.82  0.250 / 0.180
G19     293.9          71.8                5.5 +/-    0.79       5.8 +/-    0.79  0.050 / 0.080
G24     315.1          21.7                4.5 +/-    2.84       9.5 +/-    2.84  0.050 / 0.060
G28     70.5           49.8                7.2 +/-    0.71       9.2 +/-    0.71  0.030 / 0.020
G30     155.6          23.6                8.5 +/-    1.67      17.2 +/-    1.67  0.030 / 0.030