PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/30-15:28:10
G02     215.1          54.7                9.3 +/-    1.25      11.2 +/-    1.25  0.060 / 0.080
G06     60.0           73.6                8.3 +/-    0.58       8.6 +/-    0.58  0.080 / 0.080
G12     319.6          39.3                6.3 +/-    0.72       9.2 +/-    0.72  0.030 / 0.060
G17     56.9           31.8                6.2 +/-    0.73      10.4 +/-    0.73  0.050 / 0.090
G19     32.0           53.4                7.4 +/-    0.60       9.0 +/-    0.60  0.030 / 0.030
G24     265.6          42.5                7.3 +/-    0.57      10.2 +/-    0.57  0.030 / 0.030
G28     121.0          15.5                7.4 +/-    1.14      18.2 +/-    1.14  0.040 / 0.050