PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-11:27:50
G01     255.7          37.2                5.7 +/-    1.13       8.7 +/-    1.13  0.040 / 0.080
G03     316.5          41.7                4.7 +/-    1.66       6.6 +/-    1.66  0.040 / 0.080
G11     241.4          14.4                5.6 +/-    1.12      14.2 +/-    1.12  0.030 / 0.040
G14     52.0           46.9                2.1 +/-    0.55       2.7 +/-    0.55  0.030 / 0.040
G18     224.6          30.7                5.6 +/-    0.95       9.7 +/-    0.95  0.110 / 0.260
G22     306.9          67.3                3.8 +/-    0.96       4.1 +/-    0.96  0.150 / 0.360
G25     43.1           12.5                2.2 +/-    1.00       5.8 +/-    1.00  0.060 / 0.150
G26     137.2          35.6                6.3 +/-    1.44       9.9 +/-    1.44  0.060 / 0.110
G31     42.4           59.9                3.6 +/-    0.41       4.1 +/-    0.41  0.060 / 0.090
G32     75.0           23.7                3.2 +/-    0.73       6.4 +/-    0.73  0.060 / 0.080