PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/07-14:12:40
G01     40.4           15.5                5.7 +/-    1.62      14.0 +/-    1.62  0.040 / 0.060
G06     173.8          39.1                8.5 +/-    1.28      12.6 +/-    1.28  0.030 / 0.080
G13     236.5          22.7                8.6 +/-    2.96      17.6 +/-    2.96  0.130 / 0.300
G15     271.3          12.1                6.8 +/-    4.10      18.2 +/-    4.10  0.100 / 0.280
G17     348.9          72.9                7.6 +/-    0.60       7.9 +/-    0.60  0.110 / 0.180
G19     279.1          70.4                7.3 +/-    0.68       7.7 +/-    0.68  0.120 / 0.160
G24     316.6          18.3                6.9 +/-    3.57      15.8 +/-    3.57  0.130 / 0.310
G28     64.4           51.6                7.4 +/-    1.24       9.2 +/-    1.24  0.090 / 0.310
G30     154.5          27.6                8.0 +/-    2.06      14.8 +/-    2.06  0.050 / 0.100