PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-18:57:40
G02     216.9          60.3               11.9 +/-    0.74      13.5 +/-    0.74  0.090 / 0.080
G06     56.8           74.2                9.1 +/-    0.53       9.4 +/-    0.53  0.080 / 0.110
G12     317.8          34.7                8.7 +/-    1.26      13.9 +/-    1.26  0.110 / 0.460
G17     56.4           33.4                7.4 +/-    0.66      12.1 +/-    0.66  0.140 / 0.370
G19     40.9           47.8                9.0 +/-    0.33      11.6 +/-    0.33  0.040 / 0.050
G24     264.5          41.2               11.8 +/-    1.21      16.8 +/-    1.21  0.040 / 0.060
G28     121.4          18.1               10.0 +/-    1.25      22.9 +/-    1.25  0.050 / 0.090