PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-13:27:50
G01     118.9          18.0                6.1 +/-    0.82      14.1 +/-    0.82  0.030 / 0.040
G07     81.1           66.5                7.1 +/-    0.47       7.7 +/-    0.47  0.030 / 0.040
G08     44.6           30.6                5.0 +/-    0.73       8.7 +/-    0.73  0.100 / 0.320
G09     175.7          24.2                8.4 +/-    1.50      16.6 +/-    1.50  0.100 / 0.280
G11     105.7          40.0                6.7 +/-    0.53       9.8 +/-    0.53  0.040 / 0.060
G13     317.5          19.8                4.3 +/-    1.48       9.6 +/-    1.48  0.040 / 0.060
G17     201.6          24.9                5.6 +/-    2.59      11.0 +/-    2.59  0.040 / 0.110
G18     93.7           20.9                6.0 +/-    0.72      12.9 +/-    0.72  0.040 / 0.080
G28     292.9          57.4                5.6 +/-    1.13       6.5 +/-    1.13  0.020 / 0.040
G30     345.0          68.1                3.7 +/-    0.86       4.0 +/-    0.86  0.030 / 0.040