PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/29-14:42:50
G02     218.6          58.9                9.0 +/-    0.74      10.3 +/-    0.74  0.080 / 0.090
G06     52.7           71.7                9.1 +/-    0.66       9.5 +/-    0.66  0.080 / 0.080
G12     318.7          37.8                6.8 +/-    0.90      10.2 +/-    0.90  0.060 / 0.070
G17     56.8           33.4                6.1 +/-    0.69       9.9 +/-    0.69  0.040 / 0.060
G19     43.0           46.4                7.5 +/-    0.71       9.9 +/-    0.71  0.120 / 0.450
G24     263.9          40.6                9.1 +/-    1.05      13.1 +/-    1.05  0.130 / 0.360
G28     122.0          18.2                8.9 +/-    1.59      20.4 +/-    1.59  0.030 / 0.040