PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/20-03:57:50
G01     317.1          23.2                7.2 +/-    2.20      14.7 +/-    2.20  0.080 / 0.160
G08     256.4          11.1               10.4 +/-    2.17      28.2 +/-    2.17  0.080 / 0.210
G10     87.6           48.9                8.5 +/-    1.22      10.9 +/-    1.22  0.070 / 0.040
G11     298.8          24.5                7.1 +/-    1.54      14.1 +/-    1.54  0.070 / 0.060
G14     309.8          71.2                8.0 +/-    0.55       8.4 +/-    0.55  0.150 / 0.240
G18     299.2          44.5                7.7 +/-    3.60      10.5 +/-    3.60  0.080 / 0.200
G20     109.5          25.9                6.7 +/-    1.11      12.7 +/-    1.11  0.060 / 0.100
G22     303.4          13.7                7.5 +/-    2.59      19.3 +/-    2.59  0.070 / 0.080
G31     173.0          48.4               10.3 +/-    1.09      13.3 +/-    1.09  0.040 / 0.050
G32     13.5           65.0                6.9 +/-    0.67       7.5 +/-    0.67  0.040 / 0.040