PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-11:43:00
G02     200.3          13.3                0.5 +/-    2.24       1.4 +/-    2.24  0.050 / 0.080
G06     171.0          48.3                4.0 +/-    0.56       5.1 +/-    0.56  0.050 / 0.070
G13     230.0          17.2                6.6 +/-    4.70      15.6 +/-    4.70  0.110 / 0.200
G17     10.8           65.9                1.7 +/-    0.87       1.8 +/-    0.87  0.100 / 0.220
G19     308.6          72.3                3.4 +/-    0.91       3.6 +/-    0.91  0.040 / 0.040
G24     313.6          24.2                4.6 +/-    3.14       9.3 +/-    3.14  0.040 / 0.030
G28     74.9           48.5                2.5 +/-    0.86       3.2 +/-    0.86  0.200 / 0.630
G30     156.8          21.3                4.7 +/-    2.20      10.1 +/-    2.20  0.120 / 0.430