PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-15:42:40
G01     38.8           12.9                5.9 +/-    3.47      15.5 +/-    3.47  0.130 / 0.240
G06     173.2          42.8               10.0 +/-    0.75      14.0 +/-    0.75  0.140 / 0.220
G13     233.5          20.2               11.5 +/-    2.29      25.2 +/-    2.29  0.050 / 0.080
G15     267.6          10.9                9.6 +/-    1.21      26.3 +/-    1.21  0.060 / 0.070
G17     0.9            69.8                8.1 +/-    0.69       8.5 +/-    0.69  0.040 / 0.070
G19     290.9          71.5                8.3 +/-    0.44       8.7 +/-    0.44  0.050 / 0.080
G24     315.3          21.5                8.6 +/-    2.51      18.3 +/-    2.51  0.030 / 0.030
G28     70.1           49.7                8.1 +/-    1.41      10.3 +/-    1.41  0.030 / 0.040
G30     155.1          23.1                8.6 +/-    1.17      17.5 +/-    1.17  0.040 / 0.040