PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/09-13:58:10
G01     41.7           17.4                6.3 +/-    3.18      14.9 +/-    3.18  0.040 / 0.060
G06     174.4          36.4                8.8 +/-    1.02      13.7 +/-    1.02  0.040 / 0.060
G13     238.7          24.4                7.5 +/-    2.30      14.8 +/-    2.30  0.190 / 0.280
G15     273.7          13.0                5.2 +/-    1.20      13.6 +/-    1.20  0.440 / 0.310
G17     340.4          74.6                6.2 +/-    0.44       6.4 +/-    0.44  0.020 / 0.020
G19     271.1          69.1                7.7 +/-    0.67       8.2 +/-    0.67  0.020 / 0.030
G24     317.4          16.1                4.6 +/-    4.01      11.1 +/-    4.01  0.060 / 0.090
G28     60.4           52.8                6.9 +/-    0.78       8.5 +/-    0.78  0.070 / 0.110
G30     153.8          30.3                8.0 +/-    1.30      13.9 +/-    1.30  0.040 / 0.040