PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/30-03:27:50
G01     314.5          27.2                6.9 +/-    2.38      12.7 +/-    2.38  0.280 / 0.200
G10     94.1           45.7                7.7 +/-    0.80      10.2 +/-    0.80  0.220 / 0.240
G11     294.0          25.9                9.4 +/-    2.75      18.0 +/-    2.75  0.090 / 0.170
G14     324.8          70.8                7.4 +/-    1.05       7.8 +/-    1.05  0.080 / 0.150
G18     292.9          47.2                8.0 +/-    9.08      10.5 +/-    9.08  0.070 / 0.050
G20     113.3          22.2                7.4 +/-    0.91      15.5 +/-    0.91  0.060 / 0.040
G22     305.7          17.0                7.6 +/-    5.14      18.1 +/-    5.14  0.070 / 0.090
G25     93.6           12.3                7.2 +/-    1.47      19.0 +/-    1.47  0.080 / 0.070
G31     170.9          54.0               10.2 +/-    0.98      12.3 +/-    0.98  0.040 / 0.030
G32     21.7           61.2                6.6 +/-    0.65       7.5 +/-    0.65  0.040 / 0.030