PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-15:28:10
G01     44.1           20.2                7.7 +/-    2.97      16.8 +/-    2.97  0.040 / 0.040
G06     175.6          32.1               13.0 +/-    1.52      21.7 +/-    1.52  0.040 / 0.040
G11     43.4           9.5                 6.4 +/-    3.55      18.1 +/-    3.55  0.040 / 0.060
G13     242.2          26.8               10.9 +/-    2.57      20.4 +/-    2.57  0.050 / 0.060
G15     276.7          14.1                9.0 +/-    1.96      22.8 +/-    1.96  0.070 / 0.180
G17     332.2          76.3                9.4 +/-    0.35       9.6 +/-    0.35  0.110 / 0.220
G19     261.0          66.7               11.4 +/-    0.74      12.3 +/-    0.74  0.030 / 0.030
G24     318.1          13.4                5.5 +/-    2.51      14.1 +/-    2.51  0.040 / 0.030
G28     55.2           54.0                9.3 +/-    0.70      11.2 +/-    0.70  0.130 / 0.250
G30     152.3          32.9               10.8 +/-    0.73      17.9 +/-    0.73  0.160 / 0.290