PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-19:12:50
G01     66.7           32.4               12.9 +/-    0.49      21.5 +/-    0.49  0.080 / 0.370
G07     139.4          28.2               14.8 +/-    1.92      27.0 +/-    1.92  0.090 / 0.350
G11     51.8           28.9               11.5 +/-    2.17      20.5 +/-    2.17  0.070 / 0.120
G13     270.1          36.9               16.2 +/-    1.51      24.8 +/-    1.51  0.060 / 0.130
G15     300.1          15.5                9.8 +/-    2.22      24.1 +/-    2.22  0.040 / 0.050
G17     238.7          69.2               15.8 +/-    0.54      16.8 +/-    0.54  0.040 / 0.060
G18     46.6           16.6               10.4 +/-    0.77      24.9 +/-    0.77  0.060 / 0.140
G19     226.9          43.6               17.5 +/-    1.38      24.1 +/-    1.38  0.050 / 0.160
G28     26.0           58.4               12.6 +/-    0.86      14.5 +/-    0.86  0.120 / 0.330
G30     138.9          57.7               14.7 +/-    0.89      17.1 +/-    0.89  0.130 / 0.380