PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/08-18:12:50
G01     66.0           32.2                9.1 +/-    0.54      15.3 +/-    0.54  0.030 / 0.060
G07     139.7          27.5               10.5 +/-    1.66      19.3 +/-    1.66  0.040 / 0.050
G11     51.2           28.1                7.3 +/-    0.86      13.3 +/-    0.86  0.050 / 0.130
G13     269.2          36.8                9.0 +/-    1.25      13.9 +/-    1.25  0.050 / 0.130
G15     299.9          15.4                6.0 +/-    1.56      14.8 +/-    1.56  0.080 / 0.400
G17     240.6          70.5               10.8 +/-    0.83      11.4 +/-    0.83  0.090 / 0.320
G18     46.0           16.2                8.0 +/-    1.03      19.3 +/-    1.03  0.030 / 0.040
G19     227.4          43.8               11.4 +/-    1.24      15.7 +/-    1.24  0.030 / 0.040
G28     26.9           58.2                7.9 +/-    0.82       9.2 +/-    0.82  0.040 / 0.060
G30     139.5          57.5               11.1 +/-    0.82      12.8 +/-    0.82  0.030 / 0.050