PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-16:42:50
G01     44.1           20.2                8.0 +/-    0.95      17.4 +/-    0.95  0.110 / 0.240
G06     175.9          31.9               13.0 +/-    1.76      21.9 +/-    1.76  0.110 / 0.360
G13     242.1          26.7               12.8 +/-    1.34      24.1 +/-    1.34  0.040 / 0.070
G15     276.2          14.2               11.1 +/-    1.05      28.2 +/-    1.05  0.050 / 0.070
G17     336.8          76.0               10.9 +/-    0.45      11.2 +/-    0.45  0.080 / 0.170
G19     261.1          66.6               10.2 +/-    0.73      11.1 +/-    0.73  0.080 / 0.220
G24     318.1          13.7                8.2 +/-    1.53      21.1 +/-    1.53  0.020 / 0.030
G28     55.9           53.7                9.5 +/-    0.51      11.5 +/-    0.51  0.030 / 0.040
G30     152.0          31.9               12.1 +/-    1.42      20.4 +/-    1.42  0.040 / 0.050