PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-16:42:50
G01     51.1           26.0                8.2 +/-    1.25      15.6 +/-    1.25  0.190 / 0.490
G06     178.0          22.4               12.1 +/-    1.28      25.1 +/-    1.28  0.240 / 0.360
G07     144.7          10.2               11.1 +/-    4.57      30.9 +/-    4.57  0.040 / 0.070
G11     44.9           16.8                6.7 +/-    1.60      15.9 +/-    1.60  0.040 / 0.050
G13     251.4          32.1               11.1 +/-    1.66      18.6 +/-    1.66  0.130 / 0.390
G15     285.0          16.0                9.6 +/-    2.23      23.3 +/-    2.23  0.130 / 0.360
G17     292.7          78.5               10.4 +/-    0.55      10.6 +/-    0.55  0.080 / 0.120
G19     243.1          59.4               11.4 +/-    0.60      13.0 +/-    0.60  0.070 / 0.130
G28     41.0           56.9                8.8 +/-    0.65      10.2 +/-    0.65  0.030 / 0.030
G30     148.2          41.0               12.2 +/-    0.98      17.5 +/-    0.98  0.040 / 0.030