PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-09:57:40
G01     293.0          39.6                5.2 +/-    2.12       7.6 +/-    2.12  0.040 / 0.050
G03     311.6          16.9                3.7 +/-    1.78       8.9 +/-    1.78  0.040 / 0.060
G10     118.5          30.0                6.2 +/-    0.91      10.8 +/-    0.91  0.070 / 0.100
G11     267.9          26.2                5.1 +/-    1.48       9.6 +/-    1.48  0.050 / 0.080
G14     13.1           62.3                4.0 +/-    0.64       4.4 +/-    0.64  0.050 / 0.080
G18     256.5          48.0                8.0 +/-    0.69      10.3 +/-    0.69  0.040 / 0.070
G22     314.3          40.9                3.2 +/-    2.57       4.6 +/-    2.57  0.050 / 0.100
G25     69.0           19.0                2.7 +/-    0.80       6.1 +/-    0.80  0.050 / 0.090
G31     123.8          78.2                6.8 +/-    0.44       6.9 +/-    0.44  0.150 / 0.240
G32     50.9           41.6                3.5 +/-    0.64       5.0 +/-    0.64  0.170 / 0.210