PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-08:57:40
G01     111.6          21.6                3.8 +/-    1.45       8.1 +/-    1.45  0.030 / 0.030
G07     97.5           61.0                6.7 +/-    0.68       7.5 +/-    0.68  0.030 / 0.030
G08     43.4           28.3                3.4 +/-    1.58       6.2 +/-    1.58  0.150 / 0.120
G09     175.3          19.2                6.6 +/-    2.26      14.9 +/-    2.26  0.070 / 0.130
G11     99.5           43.4                8.0 +/-    0.97      11.1 +/-    0.97  0.170 / 0.200
G13     313.5          25.6                3.4 +/-    2.17       6.6 +/-    2.17  0.130 / 0.190
G17     203.3          28.9                5.4 +/-    1.65       9.7 +/-    1.65  0.090 / 0.190
G18     86.5           23.0                5.0 +/-    1.21      10.2 +/-    1.21  0.070 / 0.150
G28     293.3          55.4                4.7 +/-    1.21       5.6 +/-    1.21  0.040 / 0.060
G30     355.4          73.2                5.6 +/-    0.74       5.9 +/-    0.74  0.050 / 0.060