PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-15:13:00
G01     89.1           31.4                8.2 +/-    1.06      14.0 +/-    1.06  0.030 / 0.070
G07     126.1          40.9                8.0 +/-    0.61      11.4 +/-    0.61  0.030 / 0.080
G11     67.8           40.2                7.3 +/-    0.63      10.6 +/-    0.63  0.050 / 0.060
G13     293.7          37.1               10.7 +/-    1.52      16.3 +/-    1.52  0.040 / 0.050
G15     315.0          10.3               -8.9 +/-   13.63     -24.7 +/-   13.63  0.060 / 0.080
G17     213.8          51.5               11.4 +/-    1.10      14.2 +/-    1.10  0.060 / 0.090
G18     62.4           23.4                7.3 +/-    1.06      14.8 +/-    1.06  0.070 / 0.130
G19     213.7          28.3                9.4 +/-    1.02      17.0 +/-    1.02  0.060 / 0.100
G28     336.7          61.4                7.8 +/-    0.91       8.8 +/-    0.91  0.050 / 0.070
G30     108.8          73.8                9.6 +/-    0.52      10.0 +/-    0.52  0.040 / 0.050