PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/30-16:42:50
G02     203.6          31.4                8.4 +/-    1.97      14.3 +/-    1.97  0.100 / 0.110
G06     156.1          69.1                8.7 +/-    0.80       9.2 +/-    0.80  0.090 / 0.150
G12     308.1          17.8                8.6 +/-    1.06      19.9 +/-    1.06  0.120 / 0.140
G17     35.4           49.7                7.7 +/-    1.00       9.7 +/-    1.00  0.070 / 0.120
G19     350.1          67.1                8.0 +/-    0.37       8.6 +/-    0.37  0.030 / 0.030
G24     298.0          38.5                9.8 +/-    3.33      14.6 +/-    3.33  0.030 / 0.030
G28     101.2          32.1                7.9 +/-    1.06      13.3 +/-    1.06  0.030 / 0.030