PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-04:58:00
G01     308.0          33.7                5.5 +/-    1.88       9.0 +/-    1.88  0.070 / 0.180
G10     104.7          39.5                6.3 +/-    0.67       9.2 +/-    0.67  0.080 / 0.120
G11     283.5          27.4                3.3 +/-    1.49       6.1 +/-    1.49  0.040 / 0.050
G14     351.9          68.0                4.1 +/-    0.57       4.4 +/-    0.57  0.070 / 0.070
G18     278.4          50.3                7.7 +/-    0.80       9.7 +/-    0.80  0.070 / 0.080
G20     119.7          15.4                4.3 +/-    2.28      10.5 +/-    2.28  0.080 / 0.100
G22     309.6          24.7                6.6 +/-    2.10      12.9 +/-    2.10  0.030 / 0.050
G25     84.7           15.8                4.5 +/-    2.23      10.9 +/-    2.23  0.030 / 0.040
G31     164.8          64.2                6.9 +/-    0.56       7.6 +/-    0.56  0.060 / 0.060
G32     32.6           54.8                4.1 +/-    0.99       4.9 +/-    0.99  0.060 / 0.070