PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/03-13:27:50
G01     63.2           31.0                5.1 +/-    1.02       8.8 +/-    1.02  0.040 / 0.050
G07     139.9          22.8                6.2 +/-    1.72      12.7 +/-    1.72  0.040 / 0.050
G11     50.0           27.5                4.2 +/-    0.99       7.8 +/-    0.99  0.070 / 0.100
G13     265.9          37.4                8.5 +/-    1.71      12.9 +/-    1.71  0.080 / 0.100
G15     297.6          15.9                5.3 +/-    2.89      12.9 +/-    2.89  0.110 / 0.390
G17     240.4          69.9                8.0 +/-    0.73       8.5 +/-    0.73  0.100 / 0.360
G18     44.0           14.7                4.1 +/-    1.34      10.4 +/-    1.34  0.050 / 0.070
G19     228.1          48.8                7.3 +/-    1.12       9.3 +/-    1.12  0.040 / 0.060
G28     17.4           60.3                7.0 +/-    0.60       7.9 +/-    0.60  0.060 / 0.100
G30     140.9          55.9                7.0 +/-    0.56       8.2 +/-    0.56  0.060 / 0.140