PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-06:12:50
G01     242.8          32.2                3.1 +/-    1.30       5.2 +/-    1.30  0.080 / 0.140
G03     314.6          50.3                3.2 +/-    0.71       4.0 +/-    0.71  0.060 / 0.120
G14     65.4           37.9                5.0 +/-    1.52       7.5 +/-    1.52  0.050 / 0.090
G16     159.5          23.6                2.9 +/-    2.26       5.9 +/-    2.26  0.050 / 0.080
G18     215.5          22.2                5.9 +/-    3.04      12.2 +/-    3.04  0.040 / 0.040
G22     293.8          70.8                3.5 +/-    0.43       3.6 +/-    0.43  0.040 / 0.040
G23     292.9          26.5                4.2 +/-    2.43       8.0 +/-    2.43  0.180 / 0.300
G26     130.3          42.9                5.3 +/-    0.92       7.4 +/-    0.92  0.310 / 0.320
G31     41.3           50.7                3.8 +/-    0.76       4.8 +/-    0.76  0.090 / 0.170
G32     81.5           20.2                5.1 +/-    2.15      11.2 +/-    2.15  0.080 / 0.160