PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-09:27:50
G01     108.0          25.0                4.4 +/-    1.01       8.6 +/-    1.01  0.030 / 0.040
G07     106.1          58.1                7.2 +/-    0.39       8.3 +/-    0.39  0.020 / 0.030
G08     41.7           19.2                2.0 +/-    1.03       4.6 +/-    1.03  0.080 / 0.130
G09     171.7          10.1                4.0 +/-    1.50      11.1 +/-    1.50  0.090 / 0.150
G11     88.4           42.5                6.3 +/-    0.63       8.8 +/-    0.63  0.060 / 0.160
G13     310.1          28.4                3.6 +/-    1.31       6.4 +/-    1.31  0.060 / 0.150
G17     204.8          38.7                5.4 +/-    0.92       8.0 +/-    0.92  0.030 / 0.060
G18     79.7           23.8                3.8 +/-    0.67       7.6 +/-    0.67  0.030 / 0.050
G28     314.0          60.5                4.2 +/-    0.68       4.7 +/-    0.68  0.040 / 0.060
G30     11.7           77.1                5.2 +/-    0.73       5.3 +/-    0.73  0.040 / 0.060