PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-16:12:50
G01     67.1           32.0                8.1 +/-    0.60      13.6 +/-    0.60  0.060 / 0.130
G07     138.3          24.3                8.9 +/-    0.69      17.7 +/-    0.69  0.100 / 0.170
G11     51.5           29.1                6.0 +/-    0.58      10.7 +/-    0.58  0.040 / 0.070
G13     270.2          38.1               10.4 +/-    0.93      15.6 +/-    0.93  0.040 / 0.060
G15     299.8          15.9                5.9 +/-    1.91      14.4 +/-    1.91  0.060 / 0.170
G17     235.5          69.4                9.7 +/-    1.07      10.3 +/-    1.07  0.060 / 0.160
G18     46.1           16.2                5.8 +/-    1.16      14.0 +/-    1.16  0.040 / 0.080
G19     225.3          45.4               10.0 +/-    1.51      13.5 +/-    1.51  0.050 / 0.090
G28     12.9           60.6                8.2 +/-    0.59       9.3 +/-    0.59  0.030 / 0.050
G30     137.9          56.7                9.0 +/-    1.03      10.5 +/-    1.03  0.030 / 0.040