PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-11:27:50
G01     101.4          27.2                4.2 +/-    1.47       7.8 +/-    1.47  0.030 / 0.020
G07     114.1          52.1                6.6 +/-    0.51       8.1 +/-    0.51  0.020 / 0.020
G08     42.0           20.8                4.3 +/-    2.76       9.2 +/-    2.76  0.030 / 0.040
G09     174.0          10.5                4.0 +/-    7.30      11.0 +/-    7.30  0.030 / 0.040
G11     83.4           43.9                6.3 +/-    1.40       8.6 +/-    1.40  0.060 / 0.090
G13     305.4          32.3                3.0 +/-    2.66       5.0 +/-    2.66  0.060 / 0.080
G17     207.7          38.2                4.5 +/-    1.19       6.7 +/-    1.19  0.180 / 0.430
G18     74.9           24.6                5.5 +/-    1.34      10.9 +/-    1.34  0.140 / 0.340
G28     313.0          59.3                4.1 +/-    1.24       4.7 +/-    1.24  0.090 / 0.160
G30     44.3           79.9                5.8 +/-    0.40       5.9 +/-    0.40  0.090 / 0.110