PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/17-07:27:50
G01     37.4           10.4                1.8 +/-    3.96       4.9 +/-    3.96  0.080 / 0.170
G02     198.9          14.0                2.0 +/-    7.20       5.2 +/-    7.20  0.090 / 0.190
G06     172.0          45.3                9.1 +/-    0.94      12.3 +/-    0.94  0.030 / 0.030
G13     231.6          18.9                6.4 +/-    2.72      14.4 +/-    2.72  0.030 / 0.030
G17     11.9           66.2                5.0 +/-    0.44       5.5 +/-    0.44  0.050 / 0.060
G19     300.7          72.4                5.9 +/-    0.44       6.2 +/-    0.44  0.040 / 0.060
G24     314.7          22.2                4.6 +/-    1.97       9.5 +/-    1.97  0.270 / 0.540
G28     70.4           50.6                6.0 +/-    1.15       7.5 +/-    1.15  0.320 / 0.670
G30     157.0          25.4                7.2 +/-    3.24      14.0 +/-    3.24  0.050 / 0.060