PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/09-16:27:50
G01     37.4           10.1                6.2 +/-    6.77      17.2 +/-    6.77  0.040 / 0.060
G02     200.0          13.4                9.3 +/-    2.78      24.0 +/-    2.78  0.050 / 0.080
G06     172.4          46.7               10.9 +/-    0.88      14.3 +/-    0.88  0.130 / 0.490
G13     230.7          17.7               10.5 +/-    1.46      24.6 +/-    1.46  0.180 / 0.360
G17     8.8            66.7                7.1 +/-    0.94       7.7 +/-    0.94  0.090 / 0.160
G19     303.8          72.0                8.2 +/-    0.45       8.6 +/-    0.45  0.150 / 0.160
G24     313.6          24.5               18.2 +/-    0.67      36.0 +/-    0.67  0.030 / 0.030
G28     75.3           47.8                9.7 +/-    1.05      12.6 +/-    1.05  0.030 / 0.030
G30     155.7          19.1                9.9 +/-    2.00      22.3 +/-    2.00  0.040 / 0.040