PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-14:42:40
G01     82.7           33.0                8.1 +/-    0.48      13.3 +/-    0.48  0.030 / 0.040
G07     130.8          40.0                9.7 +/-    0.83      14.1 +/-    0.83  0.030 / 0.030
G11     61.4           36.4                6.8 +/-    0.48      10.5 +/-    0.48  0.080 / 0.120
G13     286.9          37.6                7.6 +/-    1.42      11.4 +/-    1.42  0.100 / 0.120
G15     312.9          10.9               -0.3 +/-   22.92      -0.9 +/-   22.92  0.040 / 0.060
G17     219.9          60.0               10.1 +/-    0.86      11.4 +/-    0.86  0.040 / 0.060
G18     57.3           22.1                5.3 +/-    0.82      11.1 +/-    0.82  0.070 / 0.120
G19     217.9          29.9               12.6 +/-    1.58      22.1 +/-    1.58  0.070 / 0.110
G28     1.0            61.2                7.4 +/-    0.56       8.4 +/-    0.56  0.050 / 0.060
G30     120.2          72.1                8.9 +/-    0.59       9.4 +/-    0.59  0.050 / 0.070