PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/08-18:28:10
G02     225.1          67.2                9.2 +/-    1.10       9.9 +/-    1.10  0.130 / 0.330
G06     45.1           67.0                8.3 +/-    0.69       8.9 +/-    0.69  0.230 / 0.390
G12     319.8          41.8                8.1 +/-    0.56      11.4 +/-    0.56  0.050 / 0.050
G17     62.2           29.3                7.6 +/-    1.99      13.6 +/-    1.99  0.040 / 0.040
G19     49.0           42.8                8.2 +/-    0.98      11.3 +/-    0.98  0.060 / 0.130
G24     255.3          38.8                9.7 +/-    1.90      14.5 +/-    1.90  0.070 / 0.120
G28     126.2          12.7                8.9 +/-    2.12      23.5 +/-    2.12  0.050 / 0.100