PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-11:27:40
G01     45.1           21.4                2.6 +/-    0.96       5.6 +/-    0.96  0.050 / 0.080
G06     175.5          32.5                6.1 +/-    1.32      10.1 +/-    1.32  0.060 / 0.080
G13     243.5          26.6                7.8 +/-    3.24      14.7 +/-    3.24  0.080 / 0.130
G15     282.1          13.3                3.6 +/-    1.41       9.3 +/-    1.41  0.080 / 0.150
G17     350.1          74.7                4.0 +/-    0.52       4.1 +/-    0.52  0.130 / 0.320
G19     254.5          60.7                6.2 +/-    0.72       7.1 +/-    0.72  0.140 / 0.330
G24     317.5          16.0                2.2 +/-    2.93       5.4 +/-    2.93  0.070 / 0.110
G28     60.9           50.9                3.9 +/-    1.01       4.8 +/-    1.01  0.080 / 0.110
G30     153.0          36.2                4.8 +/-    0.68       7.5 +/-    0.68  0.080 / 0.210