PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-05:13:00
G01     86.6           31.2                7.5 +/-    0.60      12.9 +/-    0.60  0.030 / 0.040
G07     126.0          44.7                9.1 +/-    1.31      12.3 +/-    1.31  0.030 / 0.040
G11     70.2           42.7                7.0 +/-    0.97       9.8 +/-    0.97  0.080 / 0.230
G13     292.4          37.7                7.3 +/-    1.26      11.0 +/-    1.26  0.080 / 0.250
G15     312.9          11.8                3.3 +/-    3.76       8.9 +/-    3.76  0.040 / 0.080
G17     213.6          54.7                9.7 +/-    1.47      11.6 +/-    1.47  0.040 / 0.080
G19     213.7          30.2                7.1 +/-    2.88      12.4 +/-    2.88  0.060 / 0.130
G28     332.3          60.9                5.5 +/-    0.92       6.2 +/-    0.92  0.070 / 0.110
G30     99.5           79.2                6.7 +/-    0.40       6.8 +/-    0.40  0.040 / 0.050