PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-17:12:40
G01     41.6           17.2                6.1 +/-    1.08      14.4 +/-    1.08  0.140 / 0.200
G06     175.1          36.3               13.0 +/-    1.76      20.1 +/-    1.76  0.120 / 0.210
G13     238.3          23.9               10.5 +/-    1.33      21.1 +/-    1.33  0.050 / 0.080
G15     272.2          12.9               10.9 +/-    1.43      28.5 +/-    1.43  0.050 / 0.060
G17     351.4          73.2                9.6 +/-    0.62       9.9 +/-    0.62  0.100 / 0.190
G19     272.3          69.1                9.2 +/-    0.56       9.8 +/-    0.56  0.110 / 0.210
G24     317.0          17.3                9.9 +/-    3.18      23.3 +/-    3.18  0.030 / 0.040
G28     62.6           51.9                8.7 +/-    0.75      10.7 +/-    0.75  0.030 / 0.040
G30     153.3          27.3               11.4 +/-    0.74      21.1 +/-    0.74  0.040 / 0.040